A043364 Numbers having four 3's in base 5.

468, 1093, 1718, 1968, 2093, 2218, 2268, 2293, 2318, 2328, 2333, 2338, 2340, 2341, 2342, 2344, 2348, 2368, 2468, 2968, 3593, 4218, 4843, 5093, 5218, 5343, 5393, 5418, 5443, 5453, 5458, 5463, 5465, 5466, 5467, 5469, 5473

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

• David A. Corneth, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A007091.

Programs

PARI

isok(k) = #select(x->(x==3), digits(k, 5)) == 4; \\ Michel Marcus, Apr 24 2021