A023732 Numbers with exactly 3 2's in base 5 expansion.

62, 187, 262, 287, 302, 307, 310, 311, 313, 314, 317, 322, 337, 362, 437, 562, 687, 812, 887, 912, 927, 932, 935, 936, 938, 939, 942, 947, 962, 987, 1062, 1187, 1262, 1287, 1302, 1307, 1310, 1311, 1313, 1314, 1317, 1322

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[ Range[ 1325 ], (Count[ IntegerDigits[ #, 5 ], 2 ]==3)& ]
FromDigits[#, 5]&/@Select[Tuples[Range[0, 4], 5], Count[#, 2]==3&] (* Harvey P. Dale, Jan 17 2023 *)

Crossrefs

Sequence in context: A044394 A044775 A043359 * A045289 A045274 A045175

Adjacent sequences: A023729 A023730 A023731 * A023733 A023734 A023735

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved