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A135123 Numbers such that the digital sum base 2 and the digital sum base 3 and the digital sum base 6 all are equal. 1
1, 12, 13, 114, 115, 366, 367, 477, 687, 864, 865, 876, 877, 1086, 1087, 1305, 1326, 1327, 1386, 1387, 1596, 1597, 1626, 1627, 1656, 1657, 1746, 1747, 1836, 1837, 1956, 1957, 2595, 2607, 2646, 2647, 3276, 3277, 3906, 3907, 3948, 3949, 4068, 4069, 5438 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..1200

EXAMPLE

a(2)=12, since ds_2(12)=ds_3(12)=ds_6(12), where ds_x=digital sum base x.

MATHEMATICA

Select[Range[5000], Total[IntegerDigits[#, 2]] == Total[IntegerDigits[#, 3]] == Total[IntegerDigits[#, 6]] &] (* G. C. Greubel, Sep 26 2016 *)

CROSSREFS

Cf. A007953, A054899, A131451, A133620, A133900, A134599, A135100, A135110, A135120, A037308.

Sequence in context: A058952 A058950 A064003 * A129476 A243361 A037278

Adjacent sequences:  A135120 A135121 A135122 * A135124 A135125 A135126

KEYWORD

nonn,base

AUTHOR

Hieronymus Fischer, Dec 31 2007

STATUS

approved

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Last modified March 2 06:02 EST 2021. Contains 341742 sequences. (Running on oeis4.)