A156065 Diagonal sums of inverse of Riordan array (1/(1-x^4),x/(1-x^4)).

1, 1, 0, -1, 2, 6, -11, -35, 73, 232, -516, -1646, 3825, 12239, -29344, -94137, 231050, 742825, -1856679, -5980056, 15166101, 48922556, -125557710, -405553786, 1051197507, 3399234751

Offset

0,5

Comments

When aerated gives the diagonal sums of A156064.

Links

Table of n, a(n) for n=0..25.

Crossrefs

Sequence in context: A243794 A318199 A242791 * A302749 A130274 A352662

Adjacent sequences: A156062 A156063 A156064 * A156066 A156067 A156068

Keyword

sign

Author

Paul Barry, Oct 20 2009

Status

approved