A104227 Primes one less than the sum over a sexy prime pair.

19, 31, 67, 79, 127, 139, 151, 199, 211, 307, 547, 619, 739, 751, 919, 1087, 1231, 1459, 1471, 1759, 1987, 2131, 2179, 2239, 2251, 2467, 2647, 2851, 2971, 3319, 3331, 3391, 3499, 3511, 3559, 3571, 3727, 3739, 4027, 4567, 4759, 5107, 5347, 5419, 5431, 6367, 6607, 6619, 7027, 7219, 7459

Offset

1,1

Comments

Primes of the form A023201(i)+A046117(i)-1 or of the form 2*A087695(j)-1.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

19=7+13-1 is a prime and one less than the sum 7+13 over the second sexy prime pair.

Mathematica

Select[2#+5&/@Select[Prime[Range[600]], PrimeQ[#+6]&], PrimeQ] (* Harvey P. Dale, Jan 04 2020 *)

Crossrefs

Cf. A023201, A046117, A104228, A104229.

Sequence in context: A192505 A141184 A033212 * A274507 A032743 A106861

Adjacent sequences: A104224 A104225 A104226 * A104228 A104229 A104230

Keyword

easy,nonn

Author

Giovanni Teofilatto, Apr 02 2005

Extensions

Corrected definition. Extended beyond a(7). - R. J. Mathar, Nov 26 2008

Status

approved