id:A132172 - OEIS Search Results

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a(1) = ... = a(5) = 1; for n >= 6, a(n)=a(n-a(n-1))+a(n-a(n-5)).

+0
3

1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 6, 7, 7, 8, 8, 10, 9, 11, 10, 13, 10, 14, 12, 15, 13, 17, 13, 18, 14, 19, 15, 19, 16, 24, 16, 23, 19, 24, 16, 30, 17, 25, 21, 30, 16, 33, 22, 30, 20, 43, 15, 38, 20, 48, 10, 50, 13, 40, 16, 73 (list; graph; listen)

	OFFSET	`1,6`
	COMMENT	`a(61) is undefined.`
	LINKS	`B. Balamohan, A. Kuznetsov and S. Tanny, On the behavior of a variant of Hofstadter's Q-sequence, J. Integer Sequences, Vol. 10 (2007), #07.7.1.` `Index entries for Hofstadter-type sequences`
	MAPLE	`a := proc(n) option remember; if n<=5 then 1 else if n > a(n-1) and n > a(n-5) then RETURN(a(n-a(n-1))+a(n-a(n-5))); else ERROR(" died at n= ", n); fi; fi; end;`
	CROSSREFS	`Sequence in context: A091987 A025544 A121856 this_sequence A080680 A005376 A086419` `Adjacent sequences: A132169 A132170 A132171 this_sequence A132173 A132174 A132175`
	KEYWORD	`nonn,fini,full`
	AUTHOR	`T. D. Noe and njas, Nov 06 2007`

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Last modified December 3 01:16 EST 2008. Contains 151161 sequences.

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