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.

A299870 The sum of the first n terms of the sequence is the concatenation of the first n digits of the sequence, and a(1) = 7.

Table of values

n a(n)
1 7
2 70
3 693
4 6936
5 69363
6 693624
7 6936243
8 69362433
9 693624324
10 6936243243
11 69362432430
12 693624324303
13 6936243243024
14 69362432430243
15 693624324302427
16 6936243243024273
17 69362432430242733
18 693624324302427324
19 6936243243024273243
20 69362432430242732426
21 693624324302427324262
22 6936243243024273242622

List of values

[7, 70, 693, 6936, 69363, 693624, 6936243, 69362433, 693624324, 6936243243, 69362432430, 693624324303, 6936243243024, 69362432430243, 693624324302427, 6936243243024273, 69362432430242733, 693624324302427324, 6936243243024273243, 69362432430242732426, 693624324302427324262, 6936243243024273242622]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.