A037978 Numbers whose maximal base 4 run length is 3.

21, 42, 63, 64, 84, 86, 87, 106, 127, 128, 149, 168, 169, 171, 191, 192, 213, 234, 252, 253, 254, 257, 258, 259, 277, 298, 319, 320, 336, 337, 338, 339, 344, 345, 346, 347, 348, 349, 350, 351, 362, 383, 384, 405, 424, 425, 427

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Mathematica

Select[Range[500], Max[Length/@Split[IntegerDigits[#, 4]]]==3&] (* Harvey P. Dale, Jul 16 2017 *)

Crossrefs

Cf. A043278.

Sequence in context: A040420 A192130 A258188 * A089059 A114384 A008603

Adjacent sequences: A037975 A037976 A037977 * A037979 A037980 A037981

Keyword

nonn,base

Author

Clark Kimberling

Status

approved