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.

Original entry on oeis.org

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, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 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
Offset: 0

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Author

N. J. A. Sloane, Jul 25 2022

Keywords

Comments

This could also be regarded as an irregular triangle read by rows.

Examples

			The successive stages in the construction are:
0,
2,
4,5,6,
8,9,10,
12,13,14,15,16,17,18,
20,21,22,23,24,25,26,
28, ...
The row lengths are 1,1,3,3,7,7,15,15,31,31,63,... (see A052551).
		

Crossrefs

Cf. A052551.