A117979 - OEIS

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A117979

a(n)=A117611(9n).

1, 1000000001, 999999999000000001, 1000000000000000000000000001, 1000000001000000000000000001000000001, 999999999000000001000000000999999999000000001 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)=sum{k=0..9n, L(C(9n,k)/3)*10^k} where L(j/p) is the Legendre symbol of j and p.`
	CROSSREFS	`Sequence in context: A017517 A204593 A017649 * A096213 A048939 A095733` `Adjacent sequences: A117976 A117977 A117978 * A117980 A117981 A117982`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 06 2006`

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Last modified February 15 10:28 EST 2012. Contains 205763 sequences.