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A329502
Expansion of (1+x)*(1+2*x)/(1-x).
2
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
COMMENTS
Decimal expansion of 11/75. - Elmo R. Oliveira, Aug 09 2024
FORMULA
a(n) = 6 for n >= 2.
E.g.f.: 6*exp(x) - 2*x - 5. - Elmo R. Oliveira, Aug 09 2024
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
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Nov 19 2019
STATUS
approved