A133630 Nonprime numbers k such that binomial(k+p,k) mod k = 1, where p=10.

4, 33, 57, 68, 85, 87, 111, 121, 141, 143, 164, 169, 185, 187, 209, 219, 221, 235, 247, 249, 253, 260, 289, 292, 299, 303, 319, 323, 327, 335, 341, 356, 361, 377, 381, 388, 391, 403, 407, 411, 435, 437, 451, 452, 473, 481, 484, 485, 489, 493, 516, 517, 519

Offset: 1

Author

Hieronymus Fischer, Sep 30 2007

Keywords

• nonn
• easy

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000040, A133620-A133625, A133630, A038509, A133634-A133636, A133880, A133890, A133900, A133910.

Programs

PARI

is(n)=binomial(n+10,10)%n==1 && !isprime(n) \\ Charles R Greathouse IV, Nov 04 2015