id:A132989 - OEIS Search Results

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Inverse permutation to sequence A132988.

+0
4

1, 2, 3, 4, 8, 5, 6, 9, 7, 10, 14, 15, 27, 13, 17, 11, 19, 16, 12, 22, 23, 29, 33, 20, 35, 42, 28, 34, 40, 24, 18, 31, 32, 26, 70, 41, 21, 30, 51, 46, 38, 39, 55, 56, 57, 50, 60, 43, 25, 87, 97, 64, 47, 83, 85, 48, 49, 69, 71, 52, 93, 84, 54, 76, 77, 45, 79, 58, 144, 81, 61, 72 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`K. Brockhaus, Table of n, a(n) for n = 1..10000` `Index entries for sequences that are permutations of the natural numbers`
	EXAMPLE	`A132988(11) = 16, hence a(16) = 11; A132988(15) = 12, hence a(12) = 15.`
	PROGRAM	`(PARI) {m=150; v=vector(m); w=vectorsmall(4*m); for(n=1, m, k=1; while(w[k]\|\|(prime(n)+1)%k>0, k++); v[n]=k; w[k]=1); u=vector(m); for(j=1, m, a=v[j]; if(0<a&&a<=m, u[a]=j)); j=1; while(j<=m&&u[j]>0, print1(u[j], ", "); j++)}`
	CROSSREFS	`Cf. A132988.` `Sequence in context: A109617 A071373 A138773 this_sequence A114881 A082319 A082316` `Adjacent sequences: A132986 A132987 A132988 this_sequence A132990 A132991 A132992`
	KEYWORD	`nonn`
	AUTHOR	`Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Sep 14 2007`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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