A049178 Revert transform of 2*x*(1 - x + x^2 - x^3 - x^5)-x/(1+x).

1, 1, 1, 1, 3, 15, 59, 185, 513, 1429, 4429, 15157, 53063, 181075, 601335, 1986857, 6668441, 22844345, 79190777, 274979521, 952675283, 3299619927, 11466715411, 40054475169, 140536413497, 494404614557, 1741798930389, 6144137237061

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

Maple

Order := 80:
g := 2*x*(1-x+x^2-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: A343994 A017949 A263173 * A049150 A309564 A062473

Adjacent sequences: A049175 A049176 A049177 * A049179 A049180 A049181

Keyword

nonn

Author

Olivier Gérard

Extensions

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

Status

approved