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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.

A352701 G.f. (1/x)*Series_Reversion( x*(1-x)*(3 - 2*x + sqrt(1+4*x-4*x^2))/4 ).

Table of values

n a(n)
0 1
1 1
2 3
3 7
4 28
5 79
6 350
7 1075
8 5020
9 16180
10 78023
11 259417
12 1278340
13 4343642
14 21740636
15 75065787
16 380161308
17 1328887420
18 6792111260
19 23975385148
20 123448657904
21 439228736887
22 2275311657814
23 8148868193557
24 42427160829508

List of values

[1, 1, 3, 7, 28, 79, 350, 1075, 5020, 16180, 78023, 259417, 1278340, 4343642, 21740636, 75065787, 380161308, 1328887420, 6792111260, 23975385148, 123448657904, 439228736887, 2275311657814, 8148868193557, 42427160829508]

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

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