id:A122879 - OEIS Search Results

Search: id:A122879

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Periodic sequence of period 21.

+0
2

0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2 (list; graph; listen)

	OFFSET	`1,8`
	COMMENT	`See related comments in A122878.`
	FORMULA	`a(n+21) = a(n).` `a(n)=(1/210){21(n mod 21)+[(n+1) mod 21]+[(n+2) mod 21]-9[(n+3) mod 21]+[(n+4) mod 21]+[(n+5) mod 21]+[(n+6) mod 21]-9[(n+7) mod 21]+[(n+8) mod 21]+[(n+9) mod 21)+21[(n+10) mod 21]+[(n+11) mod 21]+[(n+12) mod 21]+[(n+13) mod 21]-9[(n+14) mod 21]+[(n+15) mod 21]+[(n+16) mod 21]-9*[(n+17) mod 21]+[(n+18) mod 21]+[(n+19) mod 21]+[(n+20) mod 21]}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Oct 23 2008]`
	CROSSREFS	`Cf. A122878.` `Sequence in context: A086612 A128207 A037867 this_sequence A037866 A053398 A065833` `Adjacent sequences: A122876 A122877 A122878 this_sequence A122880 A122881 A122882`
	KEYWORD	`nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), Sep 16 2006`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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