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

1,1

Links

Table of n, a(n) for n=1..53.

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].

Formula

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

a(n) = 4 * A088763(n). - Alois P. Heinz, Mar 04 2026

Maple

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

Crossrefs

Cf. A023201, A046117, A088763.

Sequence in context: A161424 A248428 A088449 * A102544 A152022 A213241

Adjacent sequences: A104007 A104008 A104009 * A104011 A104012 A104013

Keyword

easy,nonn

Author

Giovanni Teofilatto, Mar 31 2005

Extensions

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

Status

approved