A329502 Expansion of (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

Author

N. J. A. Sloane, Nov 19 2019

Keywords

• nonn
• easy

Comments

Decimal expansion of 11/75. - Elmo R. Oliveira, Aug 09 2024

Links

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

Crossrefs

Row 3 of array in A329501.

Programs

Mathematica

RealDigits[11/75,10,120][[1]] (* or *) PadRight[{1,4},120,{6}] (* Harvey P. Dale, Jul 16 2025 *)

PARI

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

Formula

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

E.g.f.: 6*exp(x) - 2*x - 5. - Elmo R. Oliveira, Aug 09 2024