A101682 Expansion of 2 - exp(-1 + sqrt(1-4x)).

1, 2, 0, 8, 80, 1152, 21056, 467840, 12248064, 369313280, 12605643776, 480491716608, 20231074672640, 932551401807872, 46708494389084160, 2525988902617776128, 146694190329387352064, 9105143756032486932480

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Crossrefs

Cf. A000806.

Sequence in context: A349032 A308782 A362693 * A328920 A033836 A185159

Adjacent sequences: A101679 A101680 A101681 * A101683 A101684 A101685

Keyword

nonn

Author

Ralf Stephan, Dec 13 2004

Status

approved