A030334 Position of n-th 2 in A003137.

2, 8, 9, 11, 13, 14, 23, 32, 34, 37, 40, 41, 42, 45, 48, 50, 51, 54, 57, 59, 60, 61, 63, 64, 66, 67, 68, 80, 92, 95, 99, 103, 104, 116, 128, 131, 135, 139, 140, 142, 146, 150, 152, 154, 158, 162, 164, 166, 167, 170, 171, 174, 175, 176

Offset: 1

Author

Clark Kimberling

Keywords

• nonn

Comments

A003137(a(n)) = 2. - Reinhard Zumkeller, Feb 21 2013

Links

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

Crossrefs

Cf. A030332, A030333, A030338.

Programs

Haskell

import Data.List (elemIndices)
a030334 n = a030334_list !! (n-1)
a030334_list = map (+ 1) $ elemIndices 2 a003137_list
-- Reinhard Zumkeller, Feb 21 2013