A338346 1, followed by first differences of A338340.

1, 5, 4, 8, 19, 40, 4, 9, 34, 32, 4, 25, 20, 54, 30, 41, 46, 53, 23, 40, 9, 12, 87, 9, 9, 56, 9, 27, 33, 53, 25, 124, 93, 22, 26, 128, 98, 4, 177, 63, 179, 29, 165, 9, 114, 164, 14, 29, 262, 188, 9, 127, 58, 10, 10, 58, 30, 97, 268, 229, 223, 28, 9, 97, 62, 9, 67, 87, 43, 52

Offset

1,2

Comments

A338338 has a natural division into blocks, where the blocks (after the initial 1) start at the primes described in A338339 and A338340. The first few blocks are

[1], [2, 4, 6, 3, 9], [5, 10, 20, 8], [7, 14, 28, 12, 15, 30, 40, 16], [11, 22, 44, 18, ..., 36, 48, 32], [17, ...

and the present sequence gives the lengths of the successive blocks.

Links

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

Crossrefs

Cf. A338338-A338349.

Sequence in context: A343244 A215337 A090124 * A097943 A241420 A386009

Adjacent sequences: A338343 A338344 A338345 * A338347 A338348 A338349

Keyword

nonn

Author

N. J. A. Sloane, Oct 27 2020

Status

approved