A045065 Numbers whose base-4 representation contains no 0's and exactly four 3's.

255, 511, 767, 895, 959, 991, 1007, 1015, 1019, 1021, 1022, 1535, 1791, 1919, 1983, 2015, 2031, 2039, 2043, 2045, 2046, 2559, 2815, 2943, 3007, 3039, 3055, 3063, 3067, 3069, 3070, 3455, 3519, 3551, 3567, 3575, 3579, 3581

Offset

1,1

Links

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

Mathematica

Select[Range[4500], DigitCount[#, 4, 0]==0 && DigitCount[#, 4, 3]==4&]  (* Harvey P. Dale, Mar 18 2011 *)

Crossrefs

Cf. A007090.

Sequence in context: A031197 A043348 A031469 * A158250 A045137 A329489

Adjacent sequences: A045062 A045063 A045064 * A045066 A045067 A045068

Keyword

nonn,base

Author

Clark Kimberling

Status

approved