login
A374805
a(n) is the smallest positive integer whose square can be represented as the sum of 3 distinct nonzero squares in exactly n ways, or -1 if no such number exists.
1
1, 7, 15, 23, 31, 21, 33, 39, 49, 45, 79, 57, 95, 103, 75, 69, 127, 87, 63, 151, 93, 167, 111, 123, 99, 187, 117, 105, 161, 241, 141, 135, 153, 247, 271, 283, 177, 183, 165, 275, 147, 171, 323, 219
OFFSET
0,2
EXAMPLE
a(3) = 23: 23^2 = 3^2 + 6^2 + 22^2 = 3^2 + 14^2 + 18^2 = 6^2 + 13^2 + 18^2.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Ilya Gutkovskiy, Jul 20 2024
EXTENSIONS
a(35)-a(43) from Michael S. Branicky, Jul 21 2024
STATUS
approved