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A101682 Expansion of 2 - exp(-1 + sqrt(1-4x)). 4
1, 2, 0, 8, 80, 1152, 21056, 467840, 12248064, 369313280, 12605643776, 480491716608, 20231074672640, 932551401807872, 46708494389084160, 2525988902617776128, 146694190329387352064, 9105143756032486932480 (list; graph; refs; listen; history; text; internal format)
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

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Last modified May 13 13:35 EDT 2024. Contains 372519 sequences. (Running on oeis4.)