A319548 - OEIS

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A319548

Indices of record values in A039932.

1, 3, 4, 7, 14, 22, 23, 38, 43, 44, 48, 97, 150, 243, 443, 444, 667, 668, 1244, 2443, 4443, 4444

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

A positive integer k belongs to the sequence iff there exists a positive integer n so that each of the first k multiples of n contains the decimal digit 1, but (k+1)*n does not contain the decimal digit 1, and no smaller value of n has this property for the same value of k.

REFERENCES

3 is a term because the first three multiples of 51 (51, 102, 153) all contain the decimal digit 1, and this is the unique longest sequence of this kind whose first term is 51 or less.

LINKS

Table of n, a(n) for n=1..22.

FORMULA

A039932(a(n)) = A319542(n).

CROSSREFS

Cf. A039932, A319542.

Sequence in context: A050071 A041002 A062203 * A095063 A003242 A073728

Adjacent sequences: A319545 A319546 A319547 * A319549 A319550 A319551

KEYWORD

nonn,base,more

AUTHOR

David Radcliffe, Sep 22 2018

STATUS

approved