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Search: id:A151779
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| A151779 |
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a(1)=1; for n > 1, a(n)=6*5^{wt(n-1)-1}. |
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+0
6
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| 1, 6, 6, 30, 6, 30, 30, 150, 6, 30, 30, 150, 30, 150, 150, 750, 6, 30, 30, 150, 30, 150, 150, 750, 30, 150, 150, 750, 150, 750, 750, 3750, 6, 30, 30, 150, 30, 150, 150, 750, 30, 150, 150, 750, 150, 750, 750, 3750, 30, 150, 150, 750, 150, 750, 750, 3750, 150, 750, 750, 3750
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Number of cells turned ON in n-th generation of cellular automaton based on Z^3 lattice in the same way that A147562 is based on the Z^2 lattice. Here each cell has six neighbors.
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MAPLE
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wt := proc(n) local w, m, i; w := 0; m := n; while m > 0 do i := m mod 2; w := w+i; m := (m-i)/2; od; w; end:
f:=d->[seq((2*d)*(2*d-1)^(wt(n-1)-1), n=2..120)];
f2:=d->[1, op(f(d))];
f2(3);
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CROSSREFS
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Cf. A147582, A151780, A151781, A151782.
Sequence in context: A056482 A123874 A016725 this_sequence A066714 A054436 A055522
Adjacent sequences: A151776 A151777 A151778 this_sequence A151780 A151781 A151782
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Jun 25 2009
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