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.

A349847 Expansion of (1 + 8*x) / sqrt(1 - 4*x).

Table of values

n a(n)
0 1
1 10
2 22
3 68
4 230
5 812
6 2940
7 10824
8 40326
9 151580
10 573716
11 2183480
12 8347612
13 32033848
14 123321400
15 476050320
16 1842020550
17 7142249340
18 27743985060
19 107946346200
20 420608639220
21 1641030105000
22 6410161959240
23 25066222437360
24 98115049503900
25 384391435902552

List of values

[1, 10, 22, 68, 230, 812, 2940, 10824, 40326, 151580, 573716, 2183480, 8347612, 32033848, 123321400, 476050320, 1842020550, 7142249340, 27743985060, 107946346200, 420608639220, 1641030105000, 6410161959240, 25066222437360, 98115049503900, 384391435902552]

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

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