A113233 Inverse permutation to A109812.

1, 2, 4, 3, 6, 9, 16, 5, 10, 7, 20, 12, 26, 14, 28, 8, 13, 11, 22, 19, 24, 30, 39, 17, 33, 36, 41, 44, 51, 54, 76, 15, 18, 25, 43, 21, 37, 34, 48, 23, 31, 60, 80, 46, 57, 85, 104, 27, 66, 62, 71, 64, 90, 83, 109, 68, 88, 100, 102, 74, 112, 107, 162, 29, 35, 32, 45, 42, 61, 67

Offset: 1

Author

Reinhard Zumkeller, Oct 19 2005

Keywords

• nonn
• base

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Cf. A109812, A113232, A113234, A305370.

Programs

Haskell

import Data.List (elemIndex); import Data.Maybe (fromJust)
a113233 = (+ 1) . fromJust . (`elemIndex` a109812_list)
-- Reinhard Zumkeller, Sep 15 2014

Formula

A113234(n) = a(a(n)).

Extensions

a(63) corrected by Reinhard Zumkeller, Sep 15 2014