A380489 Index k of the first element in row n of A380488 that is a multiple of n-1.

1, 2, 4, 3, 7, 5, 11, 4, 13, 8, 16, 6, 19, 12, 12, 5, 27, 14, 28, 9, 19, 17, 35, 7, 37, 20, 40, 13, 43, 13, 50, 6, 31, 28, 47, 15, 55, 29, 35, 10, 63, 20, 65, 18, 29, 36, 72, 8, 74, 38, 37, 21, 79, 41, 78, 14, 55, 44, 88, 14, 91, 51, 26, 7

Offset

2,2

Links

Table of n, a(n) for n=2..65.

Crossrefs

Cf. A380488.

Sequence in context: A256283 A257465 A120234 * A249571 A103865 A065579

Adjacent sequences: A380485 A380486 A380488 * A380490 A380491 A380492

Keyword

nonn,base

Author

M. F. Hasler and Ali Sada, Jan 25 2025

Status

approved