A095783 Values of n for which A095777(n) is 14 (those terms which are expressible in decimal digits for bases 2 through 15, but not for base 16).

15, 30, 31, 45, 60, 61, 78, 79, 91, 92, 93, 225, 228, 229, 242, 243, 247, 255, 451, 456, 457, 510, 511, 525, 588, 589, 590, 591, 676, 677, 678, 679, 680, 690, 691, 693, 798, 799, 1014, 1023, 1036, 1185, 1190, 1191, 1192, 1372, 1373, 1386, 1387, 1404, 3458

Offset

1,1

Links

Table of n, a(n) for n=1..51.

Example

a(5)=60 because 60 when expressed in successive bases starting at 2 will produce its first non-decimal digit at base 16. Like so: 111100, 2020, 330, 220, 140, 114, 74, 66, 60, 55, 50, 48, 44, 40. In base 16, 60 is 3C.

Maple

S := []; for n from 1 to 5000 do; if 1>0 then; ct := 0; ok := true; b := 2; if (n>9) then; while ok=true do; L := convert(n, base, b); for e in L while ok=true do; if (e > 9) then ok:=false; fi; od; if ok=true then; ct := ct + 1; b := b + 1; fi; od; fi; if ct=14 then S := [op(S), n]; fi; fi; od; S;

Crossrefs

Cf. A095777.

Sequence in context: A296758 A297285 A115776 * A348556 A067400 A115801

Adjacent sequences: A095780 A095781 A095782 * A095784 A095785 A095786

Keyword

base,nonn

Author

Chuck Seggelin (seqfan(AT)plastereddragon.com), Jun 05 2004

Status

approved