A264856 Index of first row of triangle A125605 containing n.

0, 2, 3, 4, 5, 6, 7, 6, 9, 10, 11, 8, 11, 10, 15, 16, 17, 18, 14, 12, 15, 22, 12, 18, 12, 22, 27, 18, 13, 20, 15, 32, 33, 34, 13, 36, 37, 14, 15, 14, 38, 42, 43, 44, 45, 16, 24, 13, 25, 50, 51, 52, 53, 54, 31, 56, 45, 58, 59, 60, 19, 62, 63, 64, 65, 66, 67

Offset: 1

Author

Reinhard Zumkeller, Nov 26 2015

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A125605, A058084.

Programs

Haskell

import Data.List (findIndex); import Data.Maybe (fromJust)
a264856 n = fromJust $ findIndex (elem n) a125605_tabl