A135121 Numbers such that the digital sum base 2 and the digital sum base 3 and the digital sum base 5 all are equal.

0, 1, 6, 7, 10, 11, 60, 61, 180, 181, 285, 300, 301, 575, 687, 754, 826, 827, 882, 883, 900, 901, 910, 911, 1254, 1305, 1311, 1326, 1327, 1335, 1377, 1383, 1386, 1387, 1395, 1431, 1506, 1507, 1532, 1626, 1627, 1650, 1651, 1890, 1891, 1955, 2013, 2036, 2040

Offset

1,3

Links

Stanislav Sykora, Table of n, a(n) for n = 1..10000

Example

a(2)=6, since ds_2(6)=ds_3(6)=ds_5(6), where ds_x=digital sum base x.

Mathematica

Select[Range[0, 3000], Length[Union[Total/@IntegerDigits[#, {2, 3, 5}]]]==1&] (* Harvey P. Dale, Sep 04 2014 *)

Crossrefs

Cf. A007953, A054899, A131451, A133620, A133900, A134599, A135100, A135110, A135120, A037308, A212222.

Sequence in context: A118957 A374353 A037303 * A309854 A083133 A101972

Adjacent sequences: A135118 A135119 A135120 * A135122 A135123 A135124

Keyword

nonn,base

Author

Hieronymus Fischer, Dec 31 2007

Extensions

Added 0, Stanislav Sykora, May 06 2012

Status

approved