OFFSET
1,1
COMMENTS
If k is in {6, 7, 23, 270, 30024, 2482211, ...} then both numbers k and k+1 are in the sequence. It seems that this set has more members.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Jahangeer Kholdi and Farideh Firoozbakht, Nov 22 2014
EXTENSIONS
a(27)-a(36) from Jinyuan Wang, Nov 28 2020
STATUS
approved