A000867 Numbers beginning with letter 'f' in English.

4, 5, 14, 15, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432

Offset: 1

Author

N. J. A. Sloane

Keywords

• word
• nonn

Links

• John Cerkan, Table of n, a(n) for n = 1..10000

Crossrefs

Subsequence of A125299.

Cf. A000865, A000870, A000873, A000981, A006092.

Programs

Mathematica

Select[Range[1000], First[Characters[IntegerName[#,"Words"]]]=="f"&] (* James C. McMahon, Dec 11 2023 *)

Extensions

More terms from John Cerkan, Feb 11 2017