A049182 Revert transform of 2*x*(1 - x + x^6)-x/(1+x).

1, 1, 3, 9, 33, 125, 501, 2063, 8719, 37531, 164093, 726491, 3250743, 14676923, 66780835, 305908709, 1409609741, 6529455069, 30386379215, 142002499261, 666116180157, 3135363209281, 14803932109737, 70097438174979

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

Maple

Order := 80:
g := 2*x*(1-x+x^6)-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: A307454 A219261 A182530 * A049168 A049171 A050387

Adjacent sequences: A049179 A049180 A049181 * A049183 A049184 A049185

Keyword

nonn

Author

Olivier Gérard

Extensions

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

Status

approved