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A123267
T is the first, sixth, fourteenth, etc. character in this sentence. (In this version, letters, spaces, commas and hyphens all count.)
1
1, 6, 14, 20, 28, 32, 36, 40, 43, 47, 51, 58, 62, 66, 77, 81, 87, 94, 97, 104, 107, 117, 125, 132, 139, 145, 152, 159, 173, 179, 188, 196, 204, 211, 218, 226, 234, 241, 249, 257, 277, 298, 319, 323, 339, 343, 349, 365, 369, 392, 396, 402, 421, 427, 446, 472
OFFSET
1,2
LINKS
EXAMPLE
0123456789
0 T is the
1 first, six
2 th, fourte
3 enth, twen
4 tieth, twe
5 nty-eighth
6 , thirty-s
7 econd, thi
8 rty-sixth,
9 fortieth,
0 forty-thi
1 rd, forty-
PROG
(Python)
from num2words import num2words
from itertools import islice
def n2w(n): return num2words(n, ordinal=True).replace(" and", "")
def agen(): # generator of terms
s, idx = "t is the ", 0
while True:
idx = 1 + s.index("t", idx)
yield idx
s += n2w(idx) + ", "
print(list(islice(agen(), 56))) # Michael S. Branicky, Mar 18 2022
CROSSREFS
Cf. A005224.
Sequence in context: A175678 A173870 A101567 * A236928 A064708 A064709
KEYWORD
nonn,word
AUTHOR
J. Lowell, Oct 09 2006
EXTENSIONS
a(7)-a(22) from R. J. Mathar, Nov 10 2006
a(23) and beyond from Michael S. Branicky, Mar 18 2022
STATUS
approved