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A153838 Records in A153004. 0
1, 3, 6, 9, 12, 21, 24, 27, 30, 45, 66, 69, 84, 105, 156, 192, 195, 222, 273, 366, 504, 528, 531, 558, 717, 912, 1236, 1536, 1539, 1572, 1581, 1797, 2346, 3060, 4008, 4464, 4467, 4500, 4725, 5940, 7752, 10128, 12480, 12483, 12516, 12522, 12741, 12825, 13959 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..49.

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

read("transforms3") : a139250 := BFILETOLIST("b139250.txt") : A139250 := proc(n) global a139250; op(n+1, a139250) ; end: A153003 := proc(n) if n =0 then 0; else 1+3/4*(A139250(n+1)-3) ; fi; end: A153004 := proc(n) A153003(n)-A153003(n-1) ; end: rec := -1 ; for n from 1 to 3000 do t := A153004(n) ; if t > rec then printf("%d, ", t) ; rec := t; fi; od: # R. J. Mathar, Jul 13 2009

CROSSREFS

Cf. A139251, A152768, A152973, A152978, A152979, A152998, A153000, A153003, A153004. Toothpick sequence: A139250.

Sequence in context: A175589 A282759 A203016 * A143829 A194420 A277823

Adjacent sequences:  A153835 A153836 A153837 * A153839 A153840 A153841

KEYWORD

nonn

AUTHOR

Omar E. Pol, Jan 02 2009

EXTENSIONS

More terms from R. J. Mathar, Jul 13 2009

STATUS

approved

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Last modified October 18 12:24 EDT 2018. Contains 316321 sequences. (Running on oeis4.)