The On-Line Encyclopedia of Integer Sequences (OEIS)

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A049609

a(n)=T(n,n+3), array T as in A049600.
(history; published version)

#7 by R. J. Mathar at Mon Oct 26 08:46:39 EDT 2015

STATUS

editing

approved

#6 by R. J. Mathar at Mon Oct 26 08:46:20 EDT 2015

FORMULA

Conjecture: -(n+3)*(n-1)*a(n) +(7*n^2+8*n-9)*a(n-1) +(-7*n^2+8*n+9)*a(n-2) +(n+1)*(n-3)*a(n-3)=0. - R. J. Mathar, Oct 26 2015

Conjecture: +n*(n+3)*(n-1)*a(n) -(2*n+1)*(3*n^2+3*n-4)*a(n-1) +(n-2)*(n+2)*(n+1)*a(n-2)=0. - R. J. Mathar, Oct 26 2015

STATUS

approved

editing

#5 by Russ Cox at Fri Mar 30 18:56:55 EDT 2012

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

Clark Kimberling

Discussion

Fri Mar 30

18:56

OEIS Server: https://oeis.org/edit/global/285

#4 by N. J. A. Sloane at Sun Jun 29 03:00:00 EDT 2008

LINKS

Milan Janjic, <a href="http://www.pmfbl.org/janjic/">Two Enumerative Functions</a>

KEYWORD

nonn,new

nonn

#3 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

KEYWORD

nonn,new

nonn

AUTHOR

Clark Kimberling, (ck6(AT)evansville.edu)

#2 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

KEYWORD

nonn,new

nonn

AUTHOR

Clark Kimberling, ck6@cedar.(AT)evansville.edu

#1 by N. J. A. Sloane at Sat Dec 11 03:00:00 EST 1999

NAME

a(n)=T(n,n+3), array T as in A049600.

DATA

0, 1, 7, 43, 253, 1462, 8378, 47818, 272422, 1550927, 8829033, 50276013, 286430763, 1632808572, 9313861092, 53163187748, 303653552188

OFFSET

0,3

KEYWORD

nonn

AUTHOR

Clark Kimberling, ck6@cedar.evansville.edu

STATUS

approved