A129971 a(n) = A129968(n)^2.

1, 4, 9, 1, 4, 9, 16, 4, 9, 16, 9, 16, 1, 4, 9, 16, 4, 9, 16, 25, 9, 16, 25, 16, 4, 9, 16, 9, 16, 25, 16, 25, 9, 16, 16, 25, 1, 4, 9, 16, 4, 9, 16, 25, 9, 16, 25, 16, 25, 4, 9, 16, 25, 9, 16, 25, 36, 16, 25, 36, 25, 9, 16, 25, 16, 25, 36, 25, 16, 25, 4, 9, 16, 9, 16, 25, 16, 25, 36, 9, 16, 25

Offset: 1

Author

N. J. A. Sloane, Jun 13 2007, Oct 07 2007

Keywords

• nonn
• base

Comments

Also a(n) = sum of digits of A129967(n)^2.

Links

• T. D. Noe, Table of n, a(n) for n=1..5000