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A308516
Odd numbers which are not squares and cannot be written as a sum of a prime and a square.
0
85, 91, 771, 1255, 1351, 21679
OFFSET
1,1
COMMENTS
The sequence is probably finite. a(7) > 2000000 (if it exists).
a(7) > 1.5*10^11, if it exists. - Giovanni Resta, Jul 16 2019
CROSSREFS
A subsequence of A020495.
Sequence in context: A020312 A156650 A044978 * A095593 A039487 A157469
KEYWORD
nonn,more
AUTHOR
Daniel Starodubtsev, Jun 03 2019
STATUS
approved