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%I #6 Apr 23 2023 22:05:26
%S 0,0,0,4,3,6,6,3,13,22,35,32,36,89,158,342,586,913,1490,2365,3884,
%T 5940,8629,12386,17637,26311
%N Number of length-n American English expressions for positive integers (spaces, hyphens, and commas excluded).
%C Limited to numbers < 10^306.
%C This entry is simply a copy of A121064 with a(4) changed from 4 to 3. See that entry for further information. The present version matches the problem in the GCHQ Puzzle Book.
%D GCHQ, The GCHQ Puzzle Book, Penguin, 2016. See page 123, Problem 6.
%Y Cf. A121064.
%K nonn,word,more,fini
%O 0,4
%A _N. J. A. Sloane_, Apr 23 2023, based on A121064.
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