1,1

Table of n, a(n) for n=1..42.

There exists k=k(n)>=0, such that the number 3^k*a(n) is a concatenation of A248145(n) consecutive odd numbers.

Cf. A248145.

Sequence in context: A123172 A010218 A107833 * A097484 A098326 A302208

Adjacent sequences: A248143 A248144 A248145 * A248147 A248148 A248149

nonn

Vladimir Shevelev, Oct 02 2014

approved