A167683 - OEIS

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A167683

Hankel transform of A007325.

1, 0, -1, 1, 0, 0, -1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

COMMENTS

Nonzero elements appear to be indexed by abs(A131723). -1 elements appear to be indexed by 2*A014493(n).

LINKS

Table of n, a(n) for n=0..103.

CROSSREFS

Sequence in context: A266514 A082960 A320815 * A266502 A075438 A118174

Adjacent sequences: A167680 A167681 A167682 * A167684 A167685 A167686

KEYWORD

sign

AUTHOR

Paul Barry, Nov 09 2009

STATUS

approved