A359140 G.f.: (1+z+z^2-sqrt(1+2*z-z^2-6*z^3-3*z^4))/(2*z^2*(1+z)).

1, 0, 0, 1, -1, 2, -1, 1, 3, -5, 13, -13, 18, 3, -22, 96, -143, 248, -178, 75, 576, -1312, 2917, -3614, 4198, 387, -8271, 28636, -49640, 78665, -67239, 12960, 200435, -526671, 1091169, -1485961, 1577796, 49219, -3759073, 11894774, -22077620, 33571263, -31053503, 3078688, 89051699, -249881703, 502358137, -714467917

Offset

0,6

References

N. T. Cameron and A. Nkwanta, Riordan matrices and lattice path enumeration, Notices Amer. Math. Soc., 70:2 (2023), 231-243.

Links

Table of n, a(n) for n=0..47.

Crossrefs

Sequence in context: A145236 A162206 A075248 * A365623 A336707 A128325

Adjacent sequences: A359137 A359138 A359139 * A359141 A359142 A359143

Keyword

sign

Author

N. J. A. Sloane, Jan 24 2023

Status

approved