id:A011262 - OEIS Search Results

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In the prime factorization of n, increment odd powers and decrement even powers (multiplicative and self-inverse).

+0
2

1, 4, 9, 2, 25, 36, 49, 16, 3, 100, 121, 18, 169, 196, 225, 8, 289, 12, 361, 50, 441, 484, 529, 144, 5, 676, 81, 98, 841, 900, 961, 64, 1089, 1156, 1225, 6, 1369, 1444, 1521, 400, 1681, 1764, 1849, 242, 75, 2116, 2209, 72, 7, 20, 2601, 338, 2809, 324, 3025, 784, 3249 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Index entries for sequences that are permutations of the natural numbers`
	FORMULA	`Multiplicative with f(p^k) = p^(k-1) if k even, p^(k+1) if k odd.`
	CROSSREFS	`Cf. A011264.` `Sequence in context: A007914 A048758 A159253 this_sequence A073843 A073842 A136271` `Adjacent sequences: A011259 A011260 A011261 this_sequence A011263 A011264 A011265`
	KEYWORD	`nonn,easy,mult`
	AUTHOR	`Marc LeBrun (mlb(AT)well.com)`

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

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