A000867 - OEIS

%I #29 Dec 12 2023 22:36:46

%S 4,5,14,15,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,

%T 59,400,401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,

%U 416,417,418,419,420,421,422,423,424,425,426,427,428,429,430,431,432

%N Numbers beginning with letter 'f' in English.

%H John Cerkan, <a href="/A000867/b000867.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[1000], First[Characters[IntegerName[#,"Words"]]]=="f"&] (* _James C. McMahon_, Dec 11 2023 *)

%Y Subsequence of A125299.

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

%K word,nonn

%O 1,1

%A _N. J. A. Sloane_

%E More terms from _John Cerkan_, Feb 11 2017