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 A003633 The sequence 2^(1-n)*a(n) is fixed (up to signs) by Stirling2 transform. (Formerly M3670) 176
 1, -1, 1, 4, -38, -78, 5246, -11680, -2066056, 22308440, 1898577048, -48769559680, -3518093351728, 174500124820560, 11809059761527536, -1021558531563834368, -66133927485154902144, 9433326815405995274624, 578173001867228425792384 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 REFERENCES N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS M. Bernstein and N. J. A. Sloane, Some canonical sequences of integers, Linear Alg. Applications, 226-228 (1995), 57-72; erratum 320 (2000), 210. [Link to arXiv version] M. Bernstein and N. J. A. Sloane, Some canonical sequences of integers, Linear Alg. Applications, 226-228 (1995), 57-72; erratum 320 (2000), 210. [Link to Lin. Alg. Applic. version together with omitted figures] N. J. A. Sloane, Transforms FORMULA The e.g.f. for the latter sequence satisfies A(x) + A(e^x - 1 ) = 2. EXAMPLE The sequence that is fixed up to signs by STIRLING2 is 1, -1/2, 1/4, 4/8, -38/16, -78/32, 5246/64, ... CROSSREFS Sequence in context: A121672 A020205 A265437 * A129310 A152110 A209486 Adjacent sequences:  A003630 A003631 A003632 * A003634 A003635 A003636 KEYWORD sign,eigen AUTHOR EXTENSIONS More terms from Vladeta Jovovic, Jul 12 2001 STATUS approved

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Last modified August 10 19:52 EDT 2020. Contains 336381 sequences. (Running on oeis4.)