A049175 Revert transform of 2*x*(1 - x - x^3 + x^4)-x/(1+x).

1, 1, 3, 11, 43, 181, 799, 3641, 17013, 81069, 392427, 1924363, 9539431, 47726001, 240671423, 1222026809, 6242470529, 32058889049, 165425745315, 857247711523, 4459393489451, 23278491380285, 121901175460639, 640201825131969

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: A151099 A049184 A049169 * A049158 A151100 A063031

Adjacent sequences: A049172 A049173 A049174 * A049176 A049177 A049178

Keyword

nonn

Author

Olivier Gérard

Extensions

NAME corrected by R. J. Mathar, Jul 23 2023

Status

approved