A159971 Riordan array (2c(-x)-1, xc(-x)^3), c(x) the g.f. of A000108.

1, -2, 1, 4, -5, 1, -10, 19, -8, 1, 28, -68, 43, -11, 1, -84, 240, -198, 76, -14, 1, 264, -847, 845, -427, 118, -17, 1, -858, 3003, -3458, 2140, -782, 169, -20, 1, 2860, -10712, 13804, -9996, 4503, -1290, 229, -23, 1, -9724, 38454, -54264, 44574

Offset

0,2

Comments

Inverse of A159965. Row sums are A159972.

Links

Table of n, a(n) for n=0..48.

Example

Triangle begins
1,
-2, 1,
4, -5, 1,
-10, 19, -8, 1,
28, -68, 43, -11, 1,
-84, 240, -198, 76, -14, 1,
264, -847, 845, -427, 118, -17, 1,
-858, 3003, -3458, 2140, -782, 169, -20, 1

Crossrefs

Sequence in context: A124960 A137346 A264017 * A114158 A370181 A248666

Adjacent sequences: A159968 A159969 A159970 * A159972 A159973 A159974

Keyword

easy,sign,tabl

Author

Paul Barry, Apr 28 2009

Status

approved