OFFSET
1,2
COMMENTS
Terms a(3) .. a(11) are squarefree semiprimes, but 33554945 = 5 * 47 * 142787.
Records themselves are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13.
PROG
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Antti Karttunen, Apr 18 2020
EXTENSIONS
a(13) from Jinyuan Wang, May 01 2020
STATUS
approved