A247682 Odd composite numbers congruent to 5 modulo 9.

77, 95, 185, 203, 221, 275, 329, 365, 437, 455, 473, 527, 545, 581, 635, 671, 689, 707, 725, 779, 815, 833, 851, 869, 905, 923, 959, 995, 1067, 1085, 1121, 1139, 1157, 1175, 1211, 1247, 1265, 1337, 1355, 1391, 1445, 1463, 1517, 1535, 1589

Offset: 1

Author

Odimar Fabeny, Sep 22 2014

Keywords

• nonn
• easy

Comments

Subsequence of A017221 (9n + 5).

Links

• Odimar Fabeny, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A017221, A247676, A247678, A247679, A247681, A247683.

Programs

Mathematica

Select[18Range[100] + 5, Not[PrimeQ[#]] &] (* Alonso del Arte, Sep 25 2014 *)
Select[Range[5,2000,18],CompositeQ] (* Harvey P. Dale, Feb 21 2016 *)

PARI

lista(nn) = {forcomposite(n=1, nn, if ((n % 2) && ((n % 9) == 5), print1(n, ", ")); ); } \\ Michel Marcus, Sep 22 2014