A039321 Numbers whose base-7 representation has the same nonzero number of 2's and 5's.

19, 37, 68, 86, 103, 110, 124, 131, 133, 134, 136, 137, 139, 145, 166, 184, 215, 233, 247, 254, 259, 260, 262, 263, 265, 268, 275, 289, 313, 331, 362, 380, 411, 429, 446, 453, 467, 474, 476, 477, 479, 480, 482, 488, 509, 527, 558, 576, 590, 597, 602, 603

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Mathematica

Select[Range[700], DigitCount[#, 7, 2]==DigitCount[#, 7, 5]>0&] (* Harvey P. Dale, May 08 2017 *)

Crossrefs

Cf. A007093.

Sequence in context: A339860 A259648 A154944 * A043144 A043924 A301617

Adjacent sequences: A039318 A039319 A039320 * A039322 A039323 A039324

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved