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A110249 Diagonal sums of a Jacobi number triangle. +0
2
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; listen)
OFFSET

0,5

COMMENT

Diagonal sums of number triangle A110247.

FORMULA

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

CROSSREFS

Sequence in context: A118401 A147767 A113678 this_sequence A160756 A145462 A159934

Adjacent sequences: A110246 A110247 A110248 this_sequence A110250 A110251 A110252

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Jul 17 2005

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.


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