A122091 -id:A122091 - cp's OEIS frontend

A122384 Numbers appearing in A122072 at least three times.

1129, 1327, 1669, 2179, 2477, 3137, 3229, 3469, 3739, 4177, 4297, 4759, 4831, 5119, 5237, 5351, 5449, 5591, 5749, 5953, 6397, 6491, 6737, 6917, 7079, 7129, 7253, 7369, 7759, 7963, 8329, 8389, 8467, 8893, 9067, 9349, 9439, 9551, 9973, 10009, 10039

Offset: 1

Zak Seidov, Oct 19 2006

nonn

Necessary condition: p is followed by a prime gap of at least 22. Sufficient condition: p is followed by a prime gap of at least 30. [Charles R Greathouse IV, Feb 26 2012]

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Cf. A122091, A122072.

p=2;forprime(q=3,1e5,if(q\10-p\10>2,print1(p", "));p=q) \\ Charles R Greathouse IV, Feb 26 2012

a(n) ~ n log n since this sequence contains almost all primes. [Charles R Greathouse IV, Feb 26 2012]

A122390 Numbers appearing in A122072 at least four times.

Original entry on oeis.org

1327, 8467, 10799, 14107, 15683, 16141, 17257, 19087, 19333, 19609, 20809, 22307, 22573, 22817, 25261, 25471, 28229, 30593, 31397, 31907, 33247, 34061, 34549, 34981, 35617, 35677, 36389, 37747, 37907, 38393, 38461, 38501, 39251, 40289, 40387, 40639, 41299, 43331, 43801

Offset: 1

Zak Seidov, Oct 19 2006

nonn

19609 is first term appearing in A122072 six times.

Necessary condition: p is followed by a prime gap of at least 32. Sufficient condition: p is followed by a prime gap of at least 40. [Charles R Greathouse IV, Feb 26 2012]

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Cf. A122091, A122072.

p=2;forprime(q=3,1e5,if(q\10-p\10>3,print1(p", "));p=q) \\ Charles R Greathouse IV, Feb 26 2012

a(n) ~ n log n since this sequence contains almost all primes. [Charles R Greathouse IV, Feb 26 2012]

a(11)-a(39) from Charles R Greathouse IV, Feb 26 2012

cp's OEIS Frontend

A122384 Numbers appearing in A122072 at least three times.

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