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

1,1

Comments

Subsequence of A017221 (9n + 5).

Links

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

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 *)

Prog

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

Crossrefs

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

Sequence in context: A061671 A269809 A064902 * A127335 A193570 A154534

Adjacent sequences: A247679 A247680 A247681 * A247683 A247684 A247685

Keyword

nonn,easy

Author

Odimar Fabeny, Sep 22 2014

Status

approved