A348409 a(n) is the greatest k such that A307730(k) = n.

1, 3, 6, 11, 51, 16, 58, 34, 25, 69, 1384, 45, 1397, 82, 97, 152, 3754, 115, 3773, 223, 135, 1420, 6702, 175, 344, 1445, 202, 251, 6731, 374, 84656, 283, 1479, 3808, 409, 318, 84693, 3845, 1617, 541, 89520, 451, 89563, 1523, 689, 6778, 91878, 589, 500, 1073

Offset

1,2

Links

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Rémy Sigrist, C program for A348409

Formula

a(n) - A348246(n) >= n - 1.

Example

For n = 6:
- sequence A307730 starts: 1, 2, 2, 3, 3, 3, 6, 4, 4, 4, 4, 6, 6, 6, 6, 6,
- the sixth occurrence of 6 appears at position 16,
- so a(6) = 16.

Prog

(C) See Links section.

Crossrefs

Cf. A307720, A307730, A348246.

Records: A348253, A348254.

Sequence in context: A280259 A119104 A180483 * A348254 A356221 A102253

Adjacent sequences: A348406 A348407 A348408 * A348410 A348411 A348412

Keyword

nonn

Author

Rémy Sigrist, Oct 17 2021

Status

approved