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A049177 Revert transform of 2*(1 + x + x^2 + x^4 + x^6)-1/(1-x). 0
1, 1, 3, 11, 45, 197, 903, 4277, 20773, 102893, 517771, 2639571, 13603509, 70758321, 370979823, 1958471433, 10401832121, 55542275273, 297991827555, 1605599352347, 8684388729741, 47136082628653, 256651601838839 (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: A191243 A217888 A146086 * A217889 A217890 A001003

Adjacent sequences:  A049174 A049175 A049176 * A049178 A049179 A049180

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified October 17 05:23 EDT 2018. Contains 316275 sequences. (Running on oeis4.)