A112990 Inverse of A089088.

1, 2, 5, 3, 9, 4, 12, 6, 7, 8, 19, 10, 23, 11, 13, 14, 30, 15, 34, 16, 17, 18, 41, 20, 21, 22, 24, 25, 52, 26, 55, 27, 28, 29, 31, 32, 65, 33, 35, 36, 73, 37, 77, 38, 39, 40, 85, 42, 43, 44, 45, 46, 95, 47, 48, 49, 50, 51, 105, 53, 110, 54, 56, 57, 58, 59, 121, 60, 61, 62, 128

Offset: 1

Author

Reinhard Zumkeller, Oct 08 2005

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..1000
• Index entries for sequences that are permutations of the natural numbers

Crossrefs

Cf. A112978.

Programs

Haskell

import Data.List (elemIndex)
import Data.Maybe (fromJust)
a112990 = (+ 1) . fromJust . (`elemIndex` a089088_list)
-- Reinhard Zumkeller, Feb 27 2013