A268531 Position of n in A268642 (or, inverse permutation to A268642).

1, 3, 2, 10, 7, 4, 17, 9, 6, 27, 19, 11, 24, 16, 8, 86, 21, 5, 65, 26, 18, 57, 31, 88, 62, 23, 15, 80, 54, 28, 98, 85, 20, 46, 33, 12, 77, 64, 25, 38, 95, 82, 69, 56, 30, 113, 100, 87, 74, 61, 22, 118, 35, 14, 149, 79, 66, 53, 123, 40, 110, 97, 84, 273, 71, 58, 128, 45, 32, 203, 102, 89, 146, 76, 63

Offset: 1

Author

N. J. A. Sloane, Feb 17 2016

Keywords

• nonn

Comments

Apparently there is a claim that A268642 contains every positive integer exactly once, so this sequence is well-defined.

Links

• N. J. A. Sloane, Table of n, a(n) for n = 1..945

Crossrefs

Cf. A268642.

Programs

Maple

# Let b1 be a list of the initial terms of A268642
ans:=[];
for n from 1 to nops(b1) do
   if member(n,b1,'p') then ans:=[op(ans),p];
   else lprint("missed", n); break; fi;
od;
ans;