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Search: id:A059165
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| 0, 16, 64, 192, 512, 1280, 3072, 7168, 16384, 36864, 81920, 180224, 393216, 851968, 1835008, 3932160, 8388608, 17825792, 37748736, 79691776, 167772160, 352321536, 738197504, 1543503872, 3221225472, 6710886400, 13958643712
(list; graph; listen)
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OFFSET
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-1,2
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COMMENT
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A hierarchical sequence (S(W'3{2,2}*cc) - see A059126).
Generating floretion: AB + BA with A = .5'i + .5'ii' + .5'ij' + .5'ik' and B = - .5'j + .5'k - .5j' + .5k' - 'ii' - .5'ij' - .5'ik' - .5'ji' - .5'ki'. - Creighton Dement (creighton.k.dement(AT)uni-oldenburg.de), Dec 19 2004
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LINKS
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Harry J. Smith, Table of n, a(n) for n=-1,...,200
J. Wallgren, Hierarchical sequences
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FORMULA
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G.f. 16/(2*x-1)^2
a(n)=4*A058922(n+2)=16*A001787(n+1). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 21 2009]
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PROGRAM
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(PARI) for(n=1, 40, print1(shift(n, n+3), ", "))
(PARI) { for (n = -1, 200, write("b059165.txt", n, " ", (n + 1)*2^(n + 4)); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 25 2009]
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CROSSREFS
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Sequence in context: A102860 A136264 A100184 this_sequence A073718 A061449 A141840
Adjacent sequences: A059162 A059163 A059164 this_sequence A059166 A059167 A059168
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KEYWORD
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easy,nonn
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AUTHOR
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Jonas Wallgren (jonwa(AT)ida.liu.se), Feb 02 2001
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EXTENSIONS
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More terms from Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 07 2002
Edited by N. J. A. Sloane (njas(AT)research.att.com) Apr 16 2008 at the suggestion of Vim Wneders (vim(AT)gmx.li)
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