A104010 Sum of two successive sexy primes.

16, 20, 28, 32, 40, 52, 68, 80, 88, 100, 112, 128, 140, 152, 172, 200, 208, 212, 220, 268, 308, 320, 340, 352, 388, 392, 452, 460, 472, 508, 520, 532, 548, 560, 620, 628, 668, 700, 712, 740, 752, 772, 872, 892, 920, 928, 1012, 1088, 1120, 1132, 1148, 1180, 1192

Offset: 1

Author

Giovanni Teofilatto, Mar 31 2005

Keywords

• easy
• nonn

Links

• Eric Weisstein's World of Mathematics, Sexy Primes. [The definition in this webpage is unsatisfactory, because it defines a "sexy prime" as a pair of primes.- _N. J. A. Sloane_, Mar 07 2021].

Crossrefs

Cf. A023201, A046117.

Programs

Maple

A104010 := proc(n)
    2*A023201(n)+6 ;
end proc: # R. J. Mathar, May 28 2013

Formula

a(n)= A023201(n)+A046117(n) = 2*A087695(n). [From R. J. Mathar, Nov 26 2008]

Extensions

20 added, 84 removed, extended by R. J. Mathar, Nov 26 2008