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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.

A349846 Expansion of -(1 - 8*x) / sqrt(1 - 4*x).

Table of values

n a(n)
0 -1
1 6
2 10
3 28
4 90
5 308
6 1092
7 3960
8 14586
9 54340
10 204204
11 772616
12 2939300
13 11232648
14 43088200
15 165815280
16 639859770
17 2475036900
18 9593714460
19 37255818600
20 144915581580
21 564514356120
22 2201964031800
23 8599360982160
24 33619842137700
25 131570223027048
26 515366318553912

List of values

[-1, 6, 10, 28, 90, 308, 1092, 3960, 14586, 54340, 204204, 772616, 2939300, 11232648, 43088200, 165815280, 639859770, 2475036900, 9593714460, 37255818600, 144915581580, 564514356120, 2201964031800, 8599360982160, 33619842137700, 131570223027048, 515366318553912]

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

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