A045287 Numbers whose base-5 representation contains exactly two 2's and two 4's.

324, 364, 372, 564, 572, 612, 949, 989, 997, 1189, 1197, 1237, 1324, 1364, 1372, 1449, 1489, 1497, 1524, 1549, 1599, 1604, 1609, 1619, 1620, 1621, 1623, 1699, 1739, 1747, 1764, 1772, 1789, 1797, 1804, 1809, 1819, 1820

Offset

1,1

Links

Table of n, a(n) for n=1..38.

Mathematica

Select[Range[2000], DigitCount[#, 5, 2]==DigitCount[#, 5, 4]==2&] (* Harvey P. Dale, Aug 09 2017 *)

Crossrefs

Cf. A007091.

Sequence in context: A272298 A088214 A117550 * A096526 A111278 A241502

Adjacent sequences: A045284 A045285 A045286 * A045288 A045289 A045290

Keyword

nonn,base

Author

Clark Kimberling

Status

approved