id:A065769 - OEIS Search Results

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Prime cascade: multiplicative with a(p(m)^k)=p(m-1)*p(m)^(k-1).

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1, 1, 2, 2, 3, 2, 5, 4, 6, 3, 7, 4, 11, 5, 6, 8, 13, 6, 17, 6, 10, 7, 19, 8, 15, 11, 18, 10, 23, 6, 29, 16, 14, 13, 15, 12, 31, 17, 22, 12, 37, 10, 41, 14, 18, 19, 43, 16, 35, 15, 26, 22, 47, 18, 21, 20, 34, 23, 53, 12, 59, 29, 30, 32, 33, 14, 61, 26, 38, 15, 67, 24, 71, 31, 30, 34 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(A000040(n)) = A000040(n-1); a(A000079(n)) = A000079(n-1); a(A002110(n)) = A002110(n-1).`
	EXAMPLE	`a(63) = a(3^27^1) = a(3^2)a(7^1) = (23^1)(5*7^0) = 30`
	CROSSREFS	`Cf. A065770.` `Sequence in context: A121306 A073311 A003974 this_sequence A113298 A058705 A090794` `Adjacent sequences: A065766 A065767 A065768 this_sequence A065770 A065771 A065772`
	KEYWORD	`mult,nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Nov 19 2001`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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