A249920 Inverse permutation to A055266.

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

Offset: 1

Author

Reinhard Zumkeller, Jan 14 2015

Keywords

• nonn

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. A055266, A249918.

Programs

Haskell

import Data.List (elemIndex); import Data.Maybe (fromJust)
a249920 = (+ 1) . fromJust . (`elemIndex` a055266_list)