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A049187 Revert transform of 2*(1 + x + x^2 + x^3 + x^4 + x^6 + x^7)-1/(1-x). 0
1, 1, 1, 1, 3, 15, 57, 167, 423, 1099, 3391, 11855, 41149, 134185, 418859, 1313861, 4285349, 14456605, 49097477, 164889821, 548126215, 1824046555, 6131204373, 20817947419, 70988707243, 241907381783, 823235370195, 2804366824235 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

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

LINKS

Table of n, a(n) for n=1..28.

Index entries for reversions of series

CROSSREFS

Sequence in context: A081951 A033853 A284014 * A049161 A118048 A210448

Adjacent sequences:  A049184 A049185 A049186 * A049188 A049189 A049190

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified August 9 18:32 EDT 2020. Contains 336326 sequences. (Running on oeis4.)