A350602 G.f. = ((2+3*x)/(1-x^2-x^3))^2.

4, 12, 17, 32, 54, 78, 127, 186, 275, 408, 585, 848, 1212, 1722, 2444, 3442, 4839, 6778, 9462, 13182, 18313, 25390, 35133, 48522, 66907, 92112, 126632, 173860, 238404, 326536, 446765, 610644, 833846, 1137614, 1550739, 2112210, 2874807, 3909948, 5314221, 7218208, 9798372, 13293086, 18024236

Offset

0,1

References

A. G. Shannon, P. G. Anderson and A. F. Horadam, Properties of Cordonnier, Perrin and Van der Laan numbers, International Journal of Mathematical Education in Science and Technology, Volume 37:7 (2006), 825-831. See Equation (3.12).

Links

Table of n, a(n) for n=0..42.

Crossrefs

Sequence in context: A300747 A303795 A175704 * A362873 A111371 A078514

Adjacent sequences: A350599 A350600 A350601 * A350603 A350604 A350605

Keyword

nonn

Author

N. J. A. Sloane, Jan 11 2022

Status

approved