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A049608 a(n)=T(n,n+2), array T as in A049600. 1
0, 1, 6, 34, 190, 1059, 5908, 33028, 185076, 1039525, 5851626, 33006438, 186519138, 1055789511, 5985405000, 33979107336, 193143097288 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..16.

Milan Janjic, Two Enumerative Functions

FORMULA

Conjecture: (n-1)*(2*n-1)*(n+2)*a(n) -12*n*(n-1)*(n+1)*a(n-1) +(n-2)*(2*n+1)*(n+1)*a(n-2)=0. - R. J. Mathar, Oct 26 2015

CROSSREFS

Sequence in context: A320746 A320749 A052264 * A244937 A326656 A154244

Adjacent sequences:  A049605 A049606 A049607 * A049609 A049610 A049611

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 25 00:03 EDT 2022. Contains 354047 sequences. (Running on oeis4.)