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A010757 Sum along upward diagonal of Pascal triangle from center. 0
1, 0, 1, 2, 1, 3, 7, 4, 11, 25, 16, 41, 92, 63, 155, 344, 247, 591, 1300, 967, 2267, 4950, 3785, 8735, 18955, 14820, 33775, 72905, 58060, 130965, 281403, 227612, 509015, 1089343, 892926, 1982269, 4227273, 3505386, 7732659, 16438345, 13770404 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..40.

FORMULA

a(n) = A010756(n)+ A000984(n/3) if 3|n, otherwise a(n) = A010756(n). - R. J. Mathar, Feb 08 2016

MAPLE

seq(add(binomial(i-k, k), k=ceil(i/3)..floor(i/2)), i=0..50); # Detlef Pauly (dettodet(AT)yahoo.de), Jul 24 2003

CROSSREFS

Sequence in context: A058170 A238206 A127896 * A286616 A019320 A201615

Adjacent sequences:  A010754 A010755 A010756 * A010758 A010759 A010760

KEYWORD

nonn

AUTHOR

R. K. Guy

STATUS

approved

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Last modified November 16 06:50 EST 2018. Contains 317258 sequences. (Running on oeis4.)