A257456 Smallest m, such that A257340(m) = n.

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

Offset: 1

Author

Reinhard Zumkeller, Apr 24 2015

Keywords

• nonn

Comments

A257340(a(n)) = n.

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A257340.

Programs

Haskell

import Data.List (elemIndex); import Data.Maybe (fromJust)
a257456 = (+ 1) . fromJust . (`elemIndex` a257340_list)