

A151779


a(1)=1; for n > 1, a(n)=6*5^{wt(n1)1}.


11



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
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OFFSET

1,2


COMMENTS

Number of cells turned ON in nth 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.


LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS


MAPLE

wt := proc(n) local w, m, i; w := 0; m := n; while m > 0 do i := m mod 2; w := w+i; m := (mi)/2; od; w; end:
f:=d>[seq((2*d)*(2*d1)^(wt(n1)1), n=2..120)];
f2:=d>[1, op(f(d))];
f2(3);


PROG

(PARI) a(n)=6*5^(hammingweight(n1)1)\1 \\ Charles R Greathouse IV, Mar 07 2015


CROSSREFS

Cf. A147582, A151780, A151781, A151782.
Sequence in context: A253066 A016725 A267651 * A255462 A066714 A054436
Adjacent sequences: A151776 A151777 A151778 * A151780 A151781 A151782


KEYWORD

nonn,easy


AUTHOR

N. J. A. Sloane, Jun 25 2009


STATUS

approved



