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A363659
Numbers k such that the last letter of k is the same as the first letter of k+1 when written in English.
1
0, 18, 28, 38, 79, 81, 83, 85, 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, 799, 801, 803, 805, 809, 812, 821, 823, 825, 829, 831, 833, 835, 839, 841, 843, 845, 849
OFFSET
1,2
REFERENCES
GCHQ, The GCHQ Puzzle Book, Penguin, 2016. See Puzzle 31, page 37.
LINKS
PROG
(Python)
from num2words import num2words as n2w
def ok(n): return n2w(n)[-1] == n2w(n+1)[0]
print([k for k in range(850) if ok(k)]) # Michael S. Branicky, Jun 14 2023
CROSSREFS
Sequence in context: A141782 A093648 A171221 * A216259 A117101 A063840
KEYWORD
nonn,word
AUTHOR
Sean A. Irvine, Jun 14 2023
STATUS
approved