A164818 Integer average digit of squares.

1, 4, 9, 5, 3, 3, 3, 3, 6, 6, 3, 4, 4, 4, 4, 4, 4, 5, 5, 2, 2, 5, 5, 5, 5, 2, 5, 2, 5, 5, 5, 5, 5, 2, 5, 5, 5, 5, 5, 5, 5, 5, 5, 8, 3, 3, 3, 3, 3, 3, 3, 3, 6, 3, 3, 3, 6, 3, 6, 3, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 6, 6, 3, 6, 3, 3, 3, 3, 3, 3, 3, 6, 3, 3, 3, 3, 3, 6, 6, 6, 6, 3, 3, 3, 6, 3, 3, 3, 3, 6, 6, 3, 6

Offset: 1

Author

Zak Seidov, Aug 27 2009

Keywords

• base
• nonn

Comments

a(n)= average digit of squares of A164817(n).

The only n for which a(n) = 9 is 3. a(44) = a(26165) = 8. - Robert Israel, Feb 24 2016

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A004159, A164817.

Programs

Maple

f:= proc(n) local L,r;
L:= convert(n^2,base,10);
r:= convert(L,`+`)/nops(L);
if r::integer then r else NULL fi
end proc:
map(f, [$1..1000]); # Robert Israel, Feb 24 2016