1,2

Permutation of natural numbers with inverse A213913;

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

Index entries for sequences that are permutations of the natural numbers

(Haskell)

a213912 n = a213912_list !! (n-1)

a213912_list = 1 : f [1] where

f xs@(x:_) = y : f (y : xs) where

y = if z `notElem` xs then z else 3 * x where z = a000196 x

Cf. A114183.

Sequence in context: A114181 A036134 A317502 * A070360 A248131 A070346

Adjacent sequences: A213909 A213910 A213911 * A213913 A213914 A213915

nonn

Reinhard Zumkeller, Mar 05 2013

approved