id:A087836 - OEIS Search Results

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a(n) =a(a(a(a(n-1)))) +a(n - a(n-1))

+0
5

1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 19, 19 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`A fourth-order recursion based on A004001.` `A phase break takes place at about n=500`
	MATHEMATICA	`Conway[n_Integer?Positive] := Conway[n] =Conway[Conway[Conway[Conway[n-1]]]] + Conway[n - Conway[n-1]] Conway[1] = Conway[2] = 1 digits=256 a=Table[Conway[n], {n, 1, digits}]`
	CROSSREFS	`Cf. A004001. Different from A087817.` `Sequence in context: A060802 A132073 A087817 this_sequence A091497 A005707 A087828` `Adjacent sequences: A087833 A087834 A087835 this_sequence A087837 A087838 A087839`
	KEYWORD	`nonn`
	AUTHOR	`Roger L Bagula (rlbagulatftn(AT)yahoo.com), Oct 07 2003`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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