A049177 - OEIS

A049177

Revert transform of 2*x*(1 - x - x^3 - x^5)-x/(1+x).

1, 1, 3, 11, 45, 197, 903, 4277, 20773, 102893, 517771, 2639571, 13603509, 70758321, 370979823, 1958471433, 10401832121, 55542275273, 297991827555, 1605599352347, 8684388729741, 47136082628653, 256651601838839

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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

MAPLE

Order := 80:

g := 2*x*(1-x-x^3-x^5)-x/(1+x) ;

solve(series(g, x)=y, x) :

convert(%, polynom) :

seq(coeff(%, y, i), i=0..Order-1) ; # R. J. Mathar, Jul 24 2023

CROSSREFS

Sequence in context: A191243 A217888 A146086 * A378263 A217889 A217890

Adjacent sequences: A049174 A049175 A049176 * A049178 A049179 A049180

KEYWORD

nonn

AUTHOR

Olivier Gérard

EXTENSIONS

NAME corrected. - R. J. Mathar, Jul 24 2023

STATUS

approved