cp's OEIS Frontend

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.

A355890 Let s(k) = A052551(k), and write down s(0) consecutive integers beginning with 0, skip one integer, continue with s(1) consecutive numbers, skip one integer, then s(2) consecutive numbers, skip one integer, then s(3) consecutive numbers, and so on.

This page as a plain text file.
%I A355890 #4 Jul 25 2022 22:27:41
%S A355890 0,2,4,5,6,8,9,10,12,13,14,15,16,17,18,20,21,22,23,24,25,26,28,29,30,
%T A355890 31,32,33,34,35,36,37,38,39,40,41,42,44,45,46,47,48,49,50,51,52,53,54,
%U A355890 55,56,57,58,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90
%N A355890 Let s(k) = A052551(k), and write down s(0) consecutive integers beginning with 0, skip one integer, continue with s(1) consecutive numbers, skip one integer, then s(2) consecutive numbers, skip one integer, then s(3) consecutive numbers, and so on.
%C A355890 This could also be regarded as an irregular triangle read by rows.
%e A355890 The successive stages in the construction are:
%e A355890 0,
%e A355890 2,
%e A355890 4,5,6,
%e A355890 8,9,10,
%e A355890 12,13,14,15,16,17,18,
%e A355890 20,21,22,23,24,25,26,
%e A355890 28, ...
%e A355890 The row lengths are 1,1,3,3,7,7,15,15,31,31,63,... (see A052551).
%Y A355890 Cf. A052551.
%K A355890 nonn,tabf
%O A355890 0,2
%A A355890 _N. J. A. Sloane_, Jul 25 2022