A095784 Values of n for which A095777(n) is 15 (those terms which are expressible in decimal digits for bases 2 through 16, but not for base 17).

16, 33, 48, 84, 99, 256, 260, 261, 288, 512, 513, 592, 784, 785, 786, 787, 788, 789, 800, 801, 900, 915, 916, 917, 1040, 1041, 1380, 1381, 1395, 1400, 4400, 4401, 4416, 4609, 4610, 4611, 4624, 4628, 4629

Offset: 1

Author

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

Keywords

• base
• nonn

Examples

			a(5)=99 because 99 when expressed in successive bases starting at 2 will produce its first non-decimal digit at base 17. Like so: 1100011, 10200, 1203, 344, 243, 201, 143, 120, 99, 90, 83, 78, 71, 69, 63. In base 17, 99 is 5E.
		

Crossrefs

Cf. A095777.

Programs

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=15 then S := [op(S), n]; fi; fi; od; S;