This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A338346 #14 Oct 28 2020 18:07:33 %S A338346 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, %T A338346 9,27,33,53,25,124,93,22,26,128,98,4,177,63,179,29,165,9,114,164,14, %U A338346 29,262,188,9,127,58,10,10,58,30,97,268,229,223,28,9,97,62,9,67,87,43,52 %N A338346 1, followed by first differences of A338340. %C A338346 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 %C A338346 [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, ... %C A338346 and the present sequence gives the lengths of the successive blocks. %H A338346 Rémy Sigrist, <a href="/A338346/b338346.txt">Table of n, a(n) for n = 1..10000</a> %Y A338346 Cf. A338338-A338349. %K A338346 nonn %O A338346 1,2 %A A338346 _N. J. A. Sloane_, Oct 27 2020