A329506 Expansion of (1 + x)*(1 + 2*x + 2*x^2 - 2*x^3) / (1 - x).

1, 4, 8, 8, 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

Author

N. J. A. Sloane, Nov 20 2019

Keywords

• nonn
• easy

Comments

Decimal expansion of 2233/15000. - Elmo R. Oliveira, May 06 2024

Links

• Index entries for linear recurrences with constant coefficients, signature (1).

Crossrefs

Row 3 of array in A329504.

Programs

PARI

Vec((1 + x)*(1 + 2*x + 2*x^2 - 2*x^3) / (1 - x) + O(x^80)) \\ Colin Barker, Nov 21 2019

Formula

a(n) = 6 for n >= 4.