A043360 Numbers having four 2's in base 5.

312, 937, 1312, 1437, 1512, 1537, 1552, 1557, 1560, 1561, 1563, 1564, 1567, 1572, 1587, 1612, 1687, 1812, 2187, 2812, 3437, 4062, 4437, 4562, 4637, 4662, 4677, 4682, 4685, 4686, 4688, 4689, 4692, 4697, 4712, 4737, 4812

Offset

1,1

Links

Table of n, a(n) for n=1..37.

Mathematica

Select[Range[5000], DigitCount[#, 5, 2]==4&]  (* Harvey P. Dale, Feb 04 2011 *)

Crossrefs

Cf. A007091.

Sequence in context: A259720 A011774 A011251 * A339074 A237551 A270608

Adjacent sequences: A043357 A043358 A043359 * A043361 A043362 A043363

Keyword

nonn,base,easy

Author

Clark Kimberling

Status

approved