id:A037567 - OEIS Search Results

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Base 10 digits are, in order, the first n terms of the periodic sequence with initial period 2,2,1.

+0
1

2, 22, 221, 2212, 22122, 221221, 2212212, 22122122, 221221221, 2212212212, 22122122122, 221221221221, 2212212212212, 22122122122122, 221221221221221, 2212212212212212 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n)=10a(n-1)+(1/9){8(n mod 3)+5[(n+1) mod 3]+2*[(n+2) mod 3]}, with a(0)=0 [From Paolo P. Lava (ppl(AT)spl.at), Jul 30 2009]`
	CROSSREFS	`Sequence in context: A007613 A043037 A058441 this_sequence A137109 A002276 A112893` `Adjacent sequences: A037564 A037565 A037566 this_sequence A037568 A037569 A037570`
	KEYWORD	`nonn,base`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research