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A027088 a(n) = A027082(n, 2n-1). 0
1, 3, 6, 16, 41, 107, 283, 757, 2043, 5557, 15216, 41906, 115999, 322537, 900406, 2522616, 7090307, 19987069, 56492426, 160062636, 454529595, 1293394325, 3687475479, 10531663241, 30128741717, 86324342567, 247691217352 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..27.

CROSSREFS

Sequence in context: A128720 A096745 A293949 * A027102 A218207 A019497

Adjacent sequences:  A027085 A027086 A027087 * A027089 A027090 A027091

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 28 22:40 EST 2020. Contains 331328 sequences. (Running on oeis4.)