login
A301991
Terms of A301857 where both A301857(n) and its counterpart are composite.
0
185, 323, 403, 527, 551, 779, 959, 899, 1139, 1147, 1517, 1649, 1643, 1751, 1763, 1943, 2071, 2363, 2509, 2561, 2603, 2669, 2827, 2747, 2831, 2993, 3635, 3139, 3649, 3791, 3737, 3893, 4031, 4087, 4453, 4553, 5615, 4883, 4891, 5663, 5069
OFFSET
1,1
COMMENTS
A301857 selects the least solutions to A023900 where A023900(j) + A023900(k) = 0 and the pair j,k are coprime.
EXAMPLE
185 is a term because A301857(11) = 185 and both 185 and 273 are composite.
CROSSREFS
Subsequence of A301857; cf. A023900.
Sequence in context: A129311 A252272 A247529 * A136048 A209373 A207076
KEYWORD
nonn
AUTHOR
Torlach Rush, Mar 30 2018
STATUS
approved