A124060 T totaler sequence. Number of t's in the American spelling of numbers.

0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 2, 2, 2, 2, 3, 2, 2, 2, 3, 3, 2, 2, 2, 2, 3, 2, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1

Offset

0,14

Links

Michael S. Branicky, Table of n, a(n) for n = 0..10000

Example

The words "zero" and "one" have no t's, so a(0) = a(1) = 0.
The words "two" and "three" each have one t, so a(2) = a(3) = 1.

Prog

(PARI) total(n) = { local(a, i, j, sumt); a=["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eghteen", "nineteen", "twenty", "twentyone", "twentytwo", "twentythree", "twentyfour", "twentyfive", "twentysix", "twentyseven", "twentyeight", "twentynine", "thirty", "thirtyone", "thirtytwo", "thirtythree", "thirtyfour", "thirtyfive", "thirtysix", "thirtyseven", "thirtyeight", "thirtynine", "forty", "fortyone", "fortytwo", "fortythree", "fortyfour", "fortyfive", "fortysix", "fortyseven", "fortyeight", "fortynine", "fifty"]; for(i = 1, n, sumt=0; for(j=1, length(a[i]), if(mid(a[i], j, 1)=="t", sumt++) ); print1(sumt, ", ") ) }
\\ Get a substring of length n from string str starting at position s in str.
mid(str, s, n) =  { local(v, ln, x, tmp); v =""; tmp = Vec(str); ln=length(tmp); for(x=s, s+n-1, v=concat(v, tmp[x]); ); return(v) }
(Python)
from num2words import num2words
def a(n): return num2words(n).count('t')
print([a(n) for n in range(87)]) # Michael S. Branicky, Nov 25 2021

Crossrefs

Cf. A005589, A008522.

Sequence in context: A053632 A242217 A306734 * A329720 A140194 A353282

Adjacent sequences: A124057 A124058 A124059 * A124061 A124062 A124063

Keyword

nonn,word

Author

Cino Hilliard, Nov 03 2006

Extensions

Offset corrected by Jon E. Schoenfield, Nov 23 2021

a(51) and beyond from Michael S. Branicky, Nov 25 2021

Status

approved