1,2

Self-inverse permutation of the natural numbers;

A115310(n+4,5) = a(n);

if n is written in base 6 representation, then a(n) is the value after replacing all digits d (but not the leading one) by 5-d.

Table of n, a(n) for n=1..72.

Index entries for sequences that are permutations of the natural numbers

Cf. A054429, A115303, A115304, A115305, A115307, A115308, A115309, A106649.

Sequence in context: A325651 A160000 A245448 * A171592 A265567 A265551

Adjacent sequences: A115303 A115304 A115305 * A115307 A115308 A115309

nonn,base

Reinhard Zumkeller, Jan 20 2006

approved