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A049355 Digitally balanced numbers in base 4: equal numbers of 0's, 1's, ... 3's. 7
75, 78, 99, 108, 114, 120, 135, 141, 147, 156, 177, 180, 198, 201, 210, 216, 225, 228, 16815, 16827, 16830, 16875, 16878, 16890, 17007, 17019, 17022, 17055, 17079, 17085, 17115, 17118, 17127, 17133, 17142, 17145, 17259, 17262, 17274 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..1000

MATHEMATICA

Select[Range[20000], Length[Union[DigitCount[#, 4]]]==1&] (* Harvey P. Dale, Mar 19 2013 *)

FromDigits[#, 4]&/@DeleteCases[Flatten[Permutations/@Table[PadRight[{}, 4n, {1, 0, 2, 3}], {n, 2}], 1], _?(#[[1]]==0&)]//Sort (* Harvey P. Dale, May 30 2016 *)

CROSSREFS

Cf. A031443.

Sequence in context: A143754 A023146 A031945 * A095585 A095571 A095557

Adjacent sequences:  A049352 A049353 A049354 * A049356 A049357 A049358

KEYWORD

nonn,base

AUTHOR

Harvey P. Dale

STATUS

approved

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Last modified March 30 19:28 EDT 2020. Contains 333127 sequences. (Running on oeis4.)