A154959 Triangle read by rows. Signed version of A008277.

1, -1, 1, -1, -3, 1, -1, -7, -6, 1, -1, -15, -25, -10, 1, -1, -31, -90, -65, -15, 1, -1, -63, -301, -350, -140, -21, 1, -1, -127, -966, -1701, -1050, -266, -28, 1, -1, -255, -3025, -7770, -6951, -2646, -462, -36, 1

Offset

1,5

Comments

Main diagonal positive, the rest of the terms negative. Matrix inverse of this triangle is A154960. Signs in columns as in A153881.

Links

Table of n, a(n) for n=1..45.

Crossrefs

Sequence in context: A130749 A250118 A250119 * A080417 A008277 A218577

Adjacent sequences: A154956 A154957 A154958 * A154960 A154961 A154962

Keyword

sign,tabl

Author

Mats Granvik, Jan 18 2009

Status

approved