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A122262
Number of numbers having only factors that are Pierpont primes.
1
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 20, 20, 21, 22, 23, 24, 25, 25, 26, 26, 27, 27, 28, 29, 30, 31, 32, 33, 34, 34, 35, 35, 35, 36, 36, 36, 37, 38, 39, 40, 41, 41, 42, 42, 43, 44, 44, 44, 45, 45, 45, 46, 47, 48, 48, 48, 49, 49, 50, 50, 51
OFFSET
1,2
COMMENTS
Partial sums of A122261.
LINKS
Eric Weisstein's World of Mathematics, Pierpont Prime
CROSSREFS
Sequence in context: A337769 A061069 A122256 * A172268 A017895 A228722
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Aug 29 2006
STATUS
approved