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A132989 Inverse permutation to sequence A132988. 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; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Klaus 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.

PROG

(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: A229597 A175060 A138773 * A283814 A114881 A246273

Adjacent sequences:  A132986 A132987 A132988 * A132990 A132991 A132992

KEYWORD

nonn

AUTHOR

Klaus Brockhaus, Sep 14 2007

STATUS

approved

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Last modified April 18 16:38 EDT 2019. Contains 322209 sequences. (Running on oeis4.)