Lexicographically ordered list of sequences that meet the criteria for R. L. Graham's sequence: k = a_1 < a_2 < ... < a_t =
A006255(k) and a_1*a_2*...*a_t is a square.
Discussion
Tue May 02
22:17
OEIS Server: https://oeis.org/edit/global/2639
Discussion
Sat Dec 31
18:15
N. J. A. Sloane: edited