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A059155
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A hierarchical sequence (S(W'2{3}c) - see A059126).
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2
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12, 120, 1008, 8160, 65472, 524160, 4194048, 33553920, 268434432, 2147481600, 17179865088, 137438945280, 1099511611392, 8796092989440, 70368744112128, 562949953290240, 4503599627108352, 36028797018439680, 288230376150663168, 2305843009211596800, 18446744073705357312
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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FORMULA
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G.f.: 12/((8*x-1)*(2*x-1)). [Maksym Voznyy (voznyy(AT)mail.ru), Jul 27 2009]
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MATHEMATICA
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CoefficientList[Series[12/((8 x - 1) (2 x - 1)), {x, 0, 40}], x] (* Vincenzo Librandi, May 09 2014 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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