A051734 a(n) = Sum_{i=0..n-1} (-1)^i * min(i+1,n-i) * a(i), a(0)=1.

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

Offset

0,8

Links

Seiichi Manyama, Table of n, a(n) for n = 0..10000

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