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 A039932 Smallest number k for which k, 2k, ... nk all contain the digit 1. 11
 1, 51, 51, 531, 2571, 2571, 2571, 15703, 15703, 15703, 15703, 15703, 15703, 15703, 90271, 90271, 90271, 90271, 90271, 90271, 90271, 90271, 102053, 530102, 530102, 530102, 530102, 530102, 530102, 530102, 530102, 530102, 530102, 530102, 530102 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS There are relatively few distinct terms in this sequence. The following list shows the frequencies of a(n) for n=1..2443. - Georg Fischer, Feb 21 2021       1 1       2 51       1 531       3 2571       7 15703       8 90271       1 102053      15 530102       5 4550102       1 4570102       4 4580102      49 22900501      53 134003006      93 1002003005     200 5001002003       1 5003001002     223 30005001002       1 30005002001     576 200030005001    1199 1000200030005 LINKS Giovanni Resta, Table of n, a(n) for n = 1..2443 EXAMPLE a(3)=51 since 51, 102, and 153 all contain a 1. CROSSREFS Cf. A039933, A039934, A039935, A039936, A039937, A039938, A039939, A039940. Sequence in context: A131536 A204375 A003912 * A210183 A210086 A031959 Adjacent sequences:  A039929 A039930 A039931 * A039933 A039934 A039935 KEYWORD nonn,base AUTHOR EXTENSIONS More terms from Patrick De Geest, Oct 15 1999 STATUS approved

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Last modified June 22 18:49 EDT 2021. Contains 345388 sequences. (Running on oeis4.)