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A247683 Odd composite numbers congruent to 7 modulo 9. 8
25, 115, 133, 169, 187, 205, 259, 295, 385, 403, 475, 493, 511, 529, 565, 583, 637, 655, 745, 763, 781, 799, 817, 835, 871, 889, 925, 943, 961, 979, 1015, 1105, 1141, 1159, 1177, 1195, 1267, 1285, 1339, 1357, 1375, 1393, 1411, 1465, 1501 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A017245 (9n + 7).

LINKS

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

MATHEMATICA

Select[18Range[100] + 7, Not[PrimeQ[#]] &] (* Alonso del Arte, Sep 25 2014 *)

PROG

(PARI) lista(nn) = {forcomposite(n=1, nn, if ((n % 2) && ((n % 9) == 7), print1(n, ", ")); ); } \\ Michel Marcus, Sep 22 2014

CROSSREFS

Cf. A017245, A247676, A247678, A247679, A247681, A247682.

Sequence in context: A044657 A160437 A050589 * A020152 A218493 A124953

Adjacent sequences:  A247680 A247681 A247682 * A247684 A247685 A247686

KEYWORD

nonn,easy

AUTHOR

Odimar Fabeny, Sep 22 2014

STATUS

approved

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Last modified August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)