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A037673 Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 3,2,0. 0
3, 32, 320, 3203, 32032, 320320, 3203203, 32032032, 320320320, 3203203203, 32032032032, 320320320320, 3203203203203, 32032032032032, 320320320320320, 3203203203203203 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n)=10*a(n-1)+(1/9)*{11*(n mod 3)+8*[(n+1) mod 3]-4*[(n+2) mod 3]}, with a(0)=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Jul 30 2009]

CROSSREFS

Sequence in context: A035533 A029502 A037792 * A037799 A091706 A091705

Adjacent sequences:  A037670 A037671 A037672 * A037674 A037675 A037676

KEYWORD

nonn,base

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 13 19:52 EST 2012. Contains 205536 sequences.