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A093963 Antidiagonal sums of array in A093966. 1
1, 3, 8, 20, 49, 123, 312, 824, 2221, 6235, 17904, 53348, 162545, 511747, 1645776, 5448600, 18404189, 63794611, 225353368, 814801812, 2999022641, 11274044075, 43100574472, 167987074584, 665229445293, 2681607587627, 10973746015456 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..27.

FORMULA

Conjecture: 2*a(n) -5*a(n-1) +(-n-2)*a(n-2) +2*(n+6)*a(n-3) +(n-13)*a(n-4) +4*(-n+3)*a(n-5) +2*(n-3)*a(n-6)=0. - R. J. Mathar, Nov 10 2013

CROSSREFS

Sequence in context: A054185 A171853 A330458 * A261233 A027219 A085831

Adjacent sequences:  A093960 A093961 A093962 * A093964 A093965 A093966

KEYWORD

nonn

AUTHOR

Ralf Stephan, Apr 20 2004

STATUS

approved

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Last modified January 23 16:36 EST 2020. Contains 331172 sequences. (Running on oeis4.)