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A257043 Integers with the same first and last letter in their English name. 1
19, 28, 38, 81, 83, 85, 89, 97, 102, 122, 132, 142, 152, 162, 172, 182, 192, 208, 228, 238, 248, 258, 268, 278, 288, 298, 308, 328, 338, 348, 358, 368, 378, 388, 398, 801, 803, 805, 809, 812, 821, 823, 825, 829, 831, 833, 835, 839, 841, 843, 845, 849, 851, 853, 855, 859 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Used in a Weekend Edition Sunday Puzzle, Jul 19 2015. Puzzle idea from Rodolfo Kurchan.
Earlier, used in Only Connect in 2010 (series 3 episode 10). - Michael Hamm, Oct 28 2023
LINKS
Weekend Edition Sunday Puzzle, Sunday, Jul 26 2015.
EXAMPLE
19 starts and ends with 'n'. 28 and 38 have 't', 97 has 'n'.
PROG
(Python)
from num2words import num2words
def ok(n): s = num2words(n); return s[0] == s[-1]
print([k for k in range(860) if ok(k)]) # Michael S. Branicky, Apr 12 2022
CROSSREFS
Sequence in context: A243994 A083678 A279771 * A369341 A368871 A120144
KEYWORD
nonn,easy,word
AUTHOR
Chris Hibbert, Jul 20 2015
STATUS
approved

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Last modified July 13 23:31 EDT 2024. Contains 374290 sequences. (Running on oeis4.)