id:A086931 - OEIS Search Results

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a(0) = 1, a(n) = spf(n)*a(n-spf(n)), where spf=A020639 (smallest prime factor).

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1, 1, 2, 3, 4, 5, 8, 7, 16, 24, 32, 11, 64, 13, 128, 192, 256, 17, 512, 19, 1024, 1536, 2048, 23, 4096, 5120, 8192, 12288, 16384, 29, 32768, 31, 65536, 98304, 131072, 163840, 262144, 37, 524288, 786432, 1048576, 41, 2097152, 43, 4194304, 6291456 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`a(n)=n iff n=1 or n=4 or n is prime: see A046022;` `a(2*n)=2^n.`
	CROSSREFS	`Sequence in context: A075162 A056240 A069968 this_sequence A100882 A039260 A039200` `Adjacent sequences: A086928 A086929 A086930 this_sequence A086932 A086933 A086934`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Sep 21 2003`

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Last modified August 28 22:44 EDT 2008. Contains 143251 sequences.

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