Number of length-n American English expressions for nonnegative integers (spaces, hyphens, and commas excluded).

A121064

Number of length-n American English expressions for nonnegative integers (spaces, hyphens, and commas excluded).

Terms

    a(0) =0a(1) =0a(2) =0a(3) =4a(4) =4a(5) =6a(6) =6a(7) =3a(8) =13a(9) =22a(10) =35a(11) =32a(12) =36a(13) =89a(14) =158a(15) =342a(16) =586a(17) =913a(18) =1490a(19) =2365a(20) =3884a(21) =5940a(22) =8629a(23) =12386a(24) =17637a(25) =26311

External references