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A049186 Revert transform of 2*(1 + x + x^2 + x^4 + x^6 + x^7)-1/(1-x). 0
1, 1, 3, 11, 45, 197, 901, 4259, 20643, 102035, 512365, 2606421, 13403715, 69568071, 363946211, 1917148173, 10160087333, 54132552109, 289790960735, 1557980372127, 8408281616305, 45536927325809, 247397689058521 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Sign diagram of generating sequence: +++-+-++--------...

LINKS

Table of n, a(n) for n=1..23.

Index entries for reversions of series

CROSSREFS

Sequence in context: A151130 A216949 A074532 * A049160 A191243 A217888

Adjacent sequences:  A049183 A049184 A049185 * A049187 A049188 A049189

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified March 20 05:29 EDT 2019. Contains 321344 sequences. (Running on oeis4.)