id:A071785 - OEIS Search Results

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In prime factorization of n replace each prime by the sum of its decimal digits.

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1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 12, 4, 14, 15, 16, 8, 18, 10, 20, 21, 4, 5, 24, 25, 8, 27, 28, 11, 30, 4, 32, 6, 16, 35, 36, 10, 20, 12, 40, 5, 42, 7, 8, 45, 10, 11, 48, 49, 50, 24, 16, 8, 54, 10, 56, 30, 22, 14, 60, 7, 8, 63, 64, 20, 12, 13, 32, 15, 70, 8, 72 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Multiplicative with a(p) = A007953(p), p prime.`
	EXAMPLE	`a(143)=a(1113)=a(11)a(13)=(1+1)(1+3)=24=8.`
	CROSSREFS	`Sequence in context: A114925 A043270 A089898 this_sequence A079050 A064698 A094175` `Adjacent sequences: A071782 A071783 A071784 this_sequence A071786 A071787 A071788`
	KEYWORD	`nonn,base,mult`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 06 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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