id:A050193 - OEIS Search Results

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a(n)=a(n-1)+a(n-2)-d, where d=a(n/3) if 3 divides n, else d=0; 2 initial terms.

+0
1

1, 1, 1, 2, 3, 4, 7, 11, 17, 28, 45, 71, 116, 187, 300, 487, 787, 1270, 2057, 3327, 5377, 8704, 14081, 22774, 36855, 59629, 96467, 156096, 252563, 408631, 661194, 1069825, 1730974, 2800799, 4531773, 7332501, 11864274, 19196775 (list; graph; listen)

	OFFSET	`1,4`
	CROSSREFS	`Sequence in context: A025048 A017987 A039897 this_sequence A072164 A060987 A006259` `Adjacent sequences: A050190 A050191 A050192 this_sequence A050194 A050195 A050196`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research