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A049354 Digitally balanced numbers in base 3: equal numbers of 0's, 1's, 2's. 11
11, 15, 19, 21, 260, 266, 268, 278, 290, 294, 302, 304, 308, 312, 316, 318, 332, 344, 348, 380, 384, 396, 410, 412, 416, 420, 424, 426, 434, 438, 450, 460, 462, 468, 500, 502, 508, 518, 520, 524, 528, 532, 534, 544, 550, 552, 572, 574, 578 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..2000

FORMULA

A062756(a(n)) = A077267(a(n)) and A081603(a(n)) = A077267(a(n)). - Reinhard Zumkeller, Aug 09 2014

MATHEMATICA

Select[Range[600], Length[Union[DigitCount[#, 3]]]== 1&]

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

PROG

(Haskell)

a049354 n = a049354_list !! (n-1)

a049354_list = filter f [1..] where

   f n = t0 == a062756 n && t0 == a081603 n where t0 = a077267 n

-- Reinhard Zumkeller, Aug 09 2014

CROSSREFS

Cf. A031443.

Cf. A049354-A049360. See also A061854, A037861.

Cf. A062756, A077267, A081603.

Sequence in context: A279422 A053675 A031944 * A105179 A120156 A237278

Adjacent sequences:  A049351 A049352 A049353 * A049355 A049356 A049357

KEYWORD

nonn,base

AUTHOR

Harvey P. Dale

STATUS

approved

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Last modified August 21 13:36 EDT 2017. Contains 290890 sequences.