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

1,2

Links

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

Prog

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

Crossrefs

Cf. A125605, A058084.

Sequence in context: A331303 A161658 A066853 * A141258 A117656 A101918

Adjacent sequences: A264853 A264854 A264855 * A264857 A264858 A264859

Keyword

nonn

Author

Reinhard Zumkeller, Nov 26 2015

Status

approved