The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A035512 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A035512

Number of unlabeled strongly connected digraphs with n nodes.
(history; published version)

#27 by Charles R Greathouse IV at Sun Feb 16 08:32:37 EST 2025

LINKS

Eric Weisstein's World of Mathematics, <a href="httphttps://mathworld.wolfram.com/StronglyConnectedDigraph.html">Strongly Connected Digraph.</a>

Discussion

Sun Feb 16

08:32

OEIS Server: https://oeis.org/edit/global/3014

#26 by Charles R Greathouse IV at Mon Feb 20 22:08:38 EST 2023

AUTHOR

R. C. Read (rcread(AT)math.uwaterloo.ca)

Ronald C. Read

Discussion

Mon Feb 20

22:08

OEIS Server: https://oeis.org/edit/global/2963

#25 by OEIS Server at Fri Jan 14 19:46:34 EST 2022

LINKS

Andrew Howroyd, <a href="/A035512/b035512_2.txt">Table of n, a(n) for n = 0..50</a> (terms 0..18 from R. W. Robinson)

#24 by Michael De Vlieger at Fri Jan 14 19:46:34 EST 2022

STATUS

proposed

approved

Discussion

Fri Jan 14

19:46

OEIS Server: Installed new b-file as b035512.txt.  Old b-file is now b035512_2.txt.

#23 by Andrew Howroyd at Fri Jan 14 19:12:23 EST 2022

STATUS

editing

proposed

#22 by Andrew Howroyd at Fri Jan 14 19:02:55 EST 2022

LINKS

R. W. Robinson, Andrew Howroyd, <a href="/A035512/b035512_2.txt">Table of n, a(n) for n = 0..50</a> (terms 0..18</a> from R. W. Robinson)

CROSSREFS

Column sums of A350753.

Cf. A003085, A049387, A350489, A350752.

#21 by Andrew Howroyd at Thu Jan 13 19:44:10 EST 2022

PROG

(PARI) \\ See PARI link in A350489 for program code.

A035512seq(15) \\ Andrew Howroyd, Jan 13 2022

CROSSREFS

Cf. The labeled version is A003030.

Row sums of A057276.

Cf. A003085, A049387, A350489.

STATUS

approved

editing

#20 by OEIS Server at Fri Jul 18 12:26:20 EDT 2014

LINKS

R. W. Robinson, <a href="/A035512/b035512_1.txt">Table of n, a(n) for n = 0..18</a>

#19 by Joerg Arndt at Fri Jul 18 12:26:20 EDT 2014

STATUS

reviewed

approved

Discussion

Fri Jul 18

12:26

OEIS Server: Installed new b-file as b035512.txt.  Old b-file is now b035512_1.txt.

#18 by Michel Marcus at Fri Jul 18 08:51:16 EDT 2014

STATUS

proposed

reviewed