

A145191


Numbers n such that [sum_i=1..n {omega(i)^2}] / n = c, c is an integer, where omega(i) is (A001221).


0




OFFSET

1,2


COMMENTS

If for some n is c square, then we have RootMeanSquare(omega(1),....,omega(n))=c.


LINKS

Table of n, a(n) for n=1..6.


CROSSREFS

Cf. A001221, A063971, A013939, A140480
Sequence in context: A235281 A303620 A221521 * A044158 A044539 A297597
Adjacent sequences: A145188 A145189 A145190 * A145192 A145193 A145194


KEYWORD

easy,nonn


AUTHOR

Ctibor O. Zizka, Oct 03 2008


STATUS

approved



