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A031026 a(n)=least k such that the base 7 representation of n begins at s(k), where s=A031018. 0
1, 7, 2, 9, 3, 11, 4, 58, 6, 1, 8, 65, 10, 68, 7, 71, 14, 74, 16, 77, 18, 63, 15, 83, 22, 2, 24, 89, 9, 92, 23, 95, 30, 98, 32, 3, 34, 17, 36, 31, 38, 110, 40, 11, 42, 25, 44, 39, 46, 4, 49, 531, 52, 559, 55, 506, 58, 604, 61, 608, 64, 612, 67, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..64.

CROSSREFS

Sequence in context: A240953 A092036 A021987 * A216186 A333360 A021936

Adjacent sequences:  A031023 A031024 A031025 * A031027 A031028 A031029

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 4 06:52 EDT 2020. Contains 336201 sequences. (Running on oeis4.)