A122262 - OEIS

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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

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OFFSET

1,2

COMMENTS

Partial sums of A122261.

LINKS

Table of n, a(n) for n=1..72.

Eric Weisstein's World of Mathematics, Pierpont Prime

CROSSREFS

Sequence in context: A337769 A061069 A122256 * A172268 A017895 A228722

Adjacent sequences: A122259 A122260 A122261 * A122263 A122264 A122265

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Aug 29 2006

STATUS

approved