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A072954 Numbers n without letters a, i, l or t. 1
0, 1, 4, 7, 100, 101, 104, 107, 401, 404, 407, 700, 701, 704, 707 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The sequence terminates because all numbers above 707 contain the banned letters. - Michael Joseph Halm, Apr 13 2016

LINKS

Table of n, a(n) for n=1..15.

M. J. Halm, Sequences (Re)discovered, Mpossibilities 81 (Aug. 2002). See Entry LIII.

MATHEMATICA

Reap[Do[If[StringFreeQ[IntegerName@ i, {"a", "i", "l", "t"}], Sow@ i], {i, 0, 10^3}]][[-1, 1]] (* Michael De Vlieger, Mar 10 2020 *)

CROSSREFS

Sequence in context: A253202 A156474 A136276 * A322723 A220003 A024054

Adjacent sequences:  A072951 A072952 A072953 * A072955 A072956 A072957

KEYWORD

easy,fini,full,nonn,word

AUTHOR

Michael Joseph Halm, Aug 13 2002

EXTENSIONS

Wrong terms 64 and 343 removed by Michael Joseph Halm, Apr 13 2016

STATUS

approved

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Last modified September 26 08:09 EDT 2020. Contains 337346 sequences. (Running on oeis4.)