A054476 Numbers not divisible by any of their digits when written in base 5.

13, 17, 19, 23, 53, 65, 67, 73, 77, 79, 85, 89, 94, 95, 97, 98, 103, 113, 115, 118, 119, 253, 263, 265, 269, 313, 317, 319, 323, 325, 329, 335, 337, 343, 347, 349, 353, 365, 367, 373, 377, 379, 385, 389, 394, 395, 397, 398, 425, 427, 437, 439, 443, 445, 449

Offset: 1

Author

Henry Bottomley, May 12 2000

Keywords

• base
• easy
• nonn

Links

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

Crossrefs

Cf. A038772, A055239, A055240.

Programs

PARI

is(n)=my(d=Set(digits(n,5))); for(i=if(d[1],1,2),#d, if(n%d[i]==0, return(0))); 1 \\ Charles R Greathouse IV, Feb 23 2017