OFFSET
1,2
LINKS
David A. Corneth, Table of n, a(n) for n = 1..10000
EXAMPLE
468 is in the sequence since 2^2*3^2*(2^2+3^2) = 4*9*13 = 468.
PROG
(PARI) upto(n) = { my(res = List(0)); for(i = 1, sqrtint(n), for(j = 1, i, c = i^2 * j^2 * (i^2 + j^2); if(c <= n, listput(res, c); , next(2) ) ) ); Set(res) } \\ David A. Corneth, Nov 01 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
Henry Bottomley, Jul 25 2001
EXTENSIONS
Offset 1 from Michel Marcus, Nov 01 2020
STATUS
approved