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A049188 Revert transform of 2*(1 + x + x^2 + x^5 + x^6 + x^7)-1/(1-x). 0
1, 1, 3, 9, 31, 113, 429, 1679, 6719, 27367, 113053, 472471, 1993785, 8483023, 36348595, 156705421, 679218965, 2957961685, 12936141935, 56787742645, 250137441355, 1105189823717, 4896749876081, 21751355833739 (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..24.

Index entries for reversions of series

CROSSREFS

Sequence in context: A063032 A056335 A276549 * A049165 A052709 A049179

Adjacent sequences:  A049185 A049186 A049187 * A049189 A049190 A049191

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified August 6 18:52 EDT 2020. Contains 336256 sequences. (Running on oeis4.)