A128757 Inverse permutation to A128756.

9, 5, 2, 11, 10, 1, 4, 23, 8, 20, 6, 7, 24, 3, 12, 27, 14, 64, 21, 13, 16, 17, 18, 41, 49, 15, 26, 33, 28, 32, 22, 25, 30, 29, 38, 19, 39, 53, 34, 59, 36, 35, 40, 37, 42, 72, 44, 31, 95, 45, 46, 43, 52, 56, 48, 51, 75, 47, 66, 85, 58, 55, 54, 57, 71, 61, 50, 63, 87, 65, 62, 78

Offset

1,1

Comments

Seemingly the inversion maintains the characteristics of being an "infinite braid".

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(A128756)

Crossrefs

Inverse of A128756, cf. A128754, A128755 and A000959.

Sequence in context: A075838 A094129 A021917 * A195599 A021516 A158270

Adjacent sequences: A128754 A128755 A128756 * A128758 A128759 A128760

Keyword

nonn

Author

Ferenc Adorjan (fadorjan(AT)freemail.hu or ferencadorjan(AT)gmail.com), Mar 24 2007

Status

approved