id:A087834 - OEIS Search Results

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a[n] =a[a[a[n-1]]] + a[n -1- a[n-2]]

+0
1

1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 16, 17 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Triple recursion version of A055748.`
	MATHEMATICA	`hg[n_Integer?Positive] := hg[n] =hg[hg[hg[n-1]]] + hg[n -1- hg[n-2]] hg[1] = hg[2] = 1 digits=200 a=Table[hg[n], {n, 1, digits}]`
	CROSSREFS	`Cf. A055748.` `Sequence in context: A003056 A117707 A163352 this_sequence A140437 A050500 A076885` `Adjacent sequences: A087831 A087832 A087833 this_sequence A087835 A087836 A087837`
	KEYWORD	`nonn`
	AUTHOR	`Roger L Bagula (rlbagulatftn(AT)yahoo.com), Oct 07 2003`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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