A031017 a(n)=least k such that the base 7 representation of n begins at s(k), where s=A031016.

5, 4, 3, 2, 1, 8, 5, 73, 60, 46, 32, 18, 63, 61, 4, 57, 44, 30, 16, 49, 47, 45, 3, 41, 28, 14, 35, 33, 31, 29, 2, 25, 12, 21, 19, 17, 15, 13, 1, 9, 7, 78, 64, 50, 36, 22, 8, 92, 75, 803, 656, 509, 362, 5, 805, 74, 73, 653, 506, 359, 212, 696, 60, 71, 633

Offset

1,1

Links

Table of n, a(n) for n=1..65.

Crossrefs

Sequence in context: A284803 A071691 A319332 * A266084 A055116 A276373

Adjacent sequences: A031014 A031015 A031016 * A031018 A031019 A031020

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Missing a(50) and a(51) inserted by Sean A. Irvine, Apr 10 2020

Status

approved