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A051734 a(n)=sum(min(i+1,n-i)*a(i)*(-1)^i,i=0..n-1), a(0)=1. 0
1, 1, 0, -1, 0, 1, 1, 2, 0, -2, -2, -4, -1, 1, 1, 2, 3, 7, 4, 5, -1, -8, -5, -7, -6, -11, -4, -1, 4, 13, 8, 11, 5, 4, -4, -16, -5, 1, 2, 5, 8, 19, 12, 17, -3, -26, -18, -28, -17, -23, 0, 23, 12, 13, 5, 2, -4, -14, -14, -28, -1, 25, 18, 29, 22, 37, 10, -7, -13, -32, -15, -13, -14 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Table of n, a(n) for n=0..72.

CROSSREFS

Sequence in context: A343401 A226570 A158380 * A157898 A137430 A262138

Adjacent sequences:  A051731 A051732 A051733 * A051735 A051736 A051737

KEYWORD

easy,sign

AUTHOR

Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Dec 06 1999

STATUS

approved

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Last modified May 8 12:57 EDT 2021. Contains 343666 sequences. (Running on oeis4.)