A129677 Inverse permutation to A129676.

2, 6, 1, 4, 3, 5, 8, 12, 7, 9, 11, 10, 14, 20, 13, 16, 15, 17, 19, 18, 22, 24, 21, 23, 26, 30, 25, 28, 27, 29, 32, 36, 31, 33, 35, 34, 38, 40, 37, 39, 42, 48, 41, 44, 43, 45, 47, 46, 50, 54, 49, 52, 51, 53, 56, 60, 55, 57, 59, 58, 62, 68, 61, 64, 63, 65, 67, 66, 70, 72, 69, 71

Offset

1,1

Comments

The inversion maintains the cyclic characteristics described in A129676.

Links

Ferenc Adorjan, Table of n, a(n) for n = 1..10000

Index entries for sequences that are permutations of the natural numbers

Prog

(PARI) {pinverse(v)= /* Permutation inverse of a positive sequence */
local(n, m, x); n=matsize(v)[2]; x=vector(n);
for(i=1, n, if(v[i]<=n, x[v[i]]=i)); return(x)}
a=pinverse(A129676)

Crossrefs

Inverse of A129676, cf. A128754, A128755, A129681 and A000069.

Sequence in context: A156146 A192043 A154584 * A324033 A077761 A220406

Adjacent sequences: A129674 A129675 A129676 * A129678 A129679 A129680

Keyword

nonn,base

Author

Ferenc Adorjan (fadorjan(AT)freemail.hu or ferencadorjan(AT)gmail.com), May 01 2007

Status

approved