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A043237 Numbers k such that 2 and 7 occur juxtaposed in the base-10 representation of k but not of k-1. 0
27, 72, 127, 172, 227, 270, 327, 372, 427, 472, 527, 572, 627, 672, 720, 772, 827, 872, 927, 972, 1027, 1072, 1127, 1172, 1227, 1270, 1327, 1372, 1427, 1472, 1527, 1572, 1627, 1672, 1720, 1772, 1827, 1872, 1927, 1972, 2027 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A116302 A181976 A039414 * A044017 A147651 A325824
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified June 25 03:32 EDT 2024. Contains 373691 sequences. (Running on oeis4.)