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A366582
Numbers k such that 6^k + 1 is a semiprime.
1
3, 8, 11, 12, 31, 43, 47, 59, 62, 107, 382, 514, 734, 811
OFFSET
1,1
EXAMPLE
11 is in this sequence because 6^11+1 = 7*51828151 is a semiprime.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Sean A. Irvine, Oct 13 2023
STATUS
approved