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A013608
7^n-prevprime(7^n).
1
2, 2, 6, 2, 20, 6, 2, 2, 6, 8, 44, 2, 36, 32, 2, 24, 36, 50, 92, 18, 6, 32, 86, 60, 6, 50, 12, 2, 186, 18, 2, 72, 6, 12, 60, 12, 260, 116, 86, 24, 96, 102, 66, 44, 18, 86, 110, 48, 6, 8, 72, 212, 138, 6, 104, 138, 90, 270, 114, 152, 30, 150, 50, 150, 66, 170
OFFSET
1,1
MAPLE
seq(7^i-prevprime(7^i), i=1..100);
CROSSREFS
Sequence in context: A038667 A304104 A199823 * A369867 A324158 A196441
KEYWORD
nonn
AUTHOR
James Kilfiger (mapdn(AT)csv.warwick.ac.uk)
STATUS
approved