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A110249 Diagonal sums of a Jacobi number triangle. 1
1, 0, 1, 1, 2, 0, 1, 2, 2, 0, 2, 3, 5, 0, 3, 3, 2, 0, 1, 4, 4, 0, 0, 5, 11, 0, 3, 4, 2, 0, 3, 2, 4, 0, 4, 7, 2, 0, 4, 5, 14, 0, 2, 6, 6, 0, 2, 8, 2, 0, 7, 5, 4, 0, 3, 8, 4, 0, 2, 10, 28, 0, 1, 5, 6, 0, 2, 2, 4, 0, 4, 10, 4, 0, 7, 7, 0, 0, 3, 10, 8, 0, 4, 11, 39, 0, 7, 2, 2, 0, 5, 8, 8, 0, 2, 13, 2, 0, 5, 9, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

Diagonal sums of number triangle A110247.

LINKS

Table of n, a(n) for n=0..100.

FORMULA

a(n)=sum{k=0..floor(n/2), Jacobi(k, 2n-4k+1)}

CROSSREFS

Sequence in context: A305436 A328708 A299480 * A160756 A306327 A176239

Adjacent sequences:  A110246 A110247 A110248 * A110250 A110251 A110252

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Jul 17 2005

STATUS

approved

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Last modified November 22 10:59 EST 2019. Contains 329389 sequences. (Running on oeis4.)