1,2

A026835(a(n),k) = n for some k.

Reinhard Zumkeller, Table of n, a(n) for n = 1..180

(Haskell)

import Data.List (findIndex)

import Data.Maybe (fromJust)

a219922 n = (fromJust $ findIndex (n `elem`) a026835_tabl) + 1

Sequence in context: A076054 A253201 A139636 * A159559 A047583 A010906

Adjacent sequences: A219919 A219920 A219921 * A219923 A219924 A219925

nonn

Reinhard Zumkeller, Dec 01 2012

approved