A329502 G.f. = (1+x)*(1+2*x)/(1-x).

1, 4, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6

Offset

0,2

Links

Table of n, a(n) for n=0..84.

Formula

a(n)=6 for n >= 2.

Prog

(PARI) Vec((1 + x)*(1 + 2*x) / (1 - x) + O(x^80)) \\ Colin Barker, Nov 19 2019

Crossrefs

Row 3 of array in A329501.

Sequence in context: A046262 A147862 A029854 * A141328 A322345 A298562

Adjacent sequences: A329499 A329500 A329501 * A329503 A329504 A329505

Keyword

nonn

Author

N. J. A. Sloane, Nov 19 2019

Status

approved