

A215614


Numbers n that are not multiples of 10 such that sum of digits of n^2 is 7.


2




OFFSET

1,1


COMMENTS

Sequence is complete.
Except for the number 1, these six and numbers 10^k+1 (A062397) are the only numbers (up to trailing 0's) whose square has sum of digits less than 9.  M. F. Hasler, Sep 23 2014


LINKS

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


PROG

(PARI) for(n=1, 9e9, n%10&&sumdigits(n^2)==7&&print1(n", ")) \\ M. F. Hasler, Sep 23 2014


CROSSREFS

Cf. A004159 = Sum of digits of n^2.
Sequence in context: A271148 A271200 A262711 * A013468 A244333 A041907
Adjacent sequences: A215611 A215612 A215613 * A215615 A215616 A215617


KEYWORD

nonn,base,fini,full


AUTHOR

Zak Seidov, Aug 17 2012


STATUS

approved



