The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A059419 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A059419

Triangle T(n,k) (1 <= k <= n) of tangent numbers, read by rows: T(n,k) = coefficient of x^n/n! in expansion of (tan x)^k/k!.
(history; published version)

#78 by Peter Luschny at Fri Feb 28 08:18:07 EST 2020

STATUS

proposed

approved

#77 by F. Chapoton at Fri Feb 28 05:46:18 EST 2020

STATUS

editing

proposed

#76 by F. Chapoton at Fri Feb 28 05:46:09 EST 2020

PROG

M = matrix(SR, ZZ, dim, dim)

for n in (0..dim-1): M[n, n] = 1

for n in (1..dim-1):

for k in (0..n-1):

M[n, k] = M[n-1, k-1]+(k+1)*(k+2)*M[n-1, k+1]

return M

STATUS

approved

editing

Discussion

Fri Feb 28

05:46

F. Chapoton: fix indentation of sage code

#75 by Sean A. Irvine at Wed Oct 23 19:55:58 EDT 2019

STATUS

editing

approved

#74 by Sean A. Irvine at Wed Oct 23 19:55:48 EDT 2019

LINKS

Peter Bala, <a href="/A112007/a112007_Bala.txt">Diagonals of triangles with generating function exp(t*F(x)).</a>.

STATUS

reviewed

editing

#73 by Michel Marcus at Wed Oct 23 13:12:08 EDT 2019

STATUS

proposed

reviewed

#72 by Peter Bala at Wed Oct 23 13:06:13 EDT 2019

STATUS

editing

proposed

#71 by Peter Bala at Sat Oct 19 17:33:10 EDT 2019

LINKS

Peter Bala, <a href="/A112007/a112007_Bala.txt">Diagonals of triangles with generating function exp(t*F(x)).</a>

STATUS

approved

editing

#70 by Bruno Berselli at Fri Jun 22 10:17:04 EDT 2018

STATUS

proposed

approved

#69 by Jean-François Alcover at Fri Jun 22 09:18:14 EDT 2018

STATUS

editing

proposed