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Search: id:A007115
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| A007115 |
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Expansion of (1-x-x^2)^x.
(Formerly M1917)
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+0
1
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| 1, 0, -2, -9, -20, -30, 66, 0, -7216, -155736, -2447640, -40095000, -696155448, -13193809200, -269899395024, -5951688692040, -140573490904320, -3543930826470720, -94977073790051904, -2697112556290627200
(list; graph; listen)
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OFFSET
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0,3
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
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Sequence in context: A077338 A047883 A042915 this_sequence A154495 A014107 A090398
Adjacent sequences: A007112 A007113 A007114 this_sequence A007116 A007117 A007118
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KEYWORD
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sign
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AUTHOR
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Simon Plouffe (simon.plouffe(AT)gmail.com)
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EXTENSIONS
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Extended with signs 11/98 by Christian G. Bower (bowerc(AT)usa.net).
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