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.

A201458 Expansion of 1/((1-2*x)*(1-3*x+3*x^2)*(1-4*x+6*x^2-4*x^3)).

Table of values

n a(n)
0 1
1 9
2 46
3 175
4 551
5 1520
6 3811
7 8921
8 19922
9 43211
10 92363
11 196608
12 419295
13 897565
14 1926458
15 4135255
16 8854359
17 18875392
18 40024059
19 84417521
20 177221602
21 370688979
22 773342163
23 1610612736
24 3350668423
25 6964989333
26 14466833194
27 30021724351
28 62233946303

List of values

[1, 9, 46, 175, 551, 1520, 3811, 8921, 19922, 43211, 92363, 196608, 419295, 897565, 1926458, 4135255, 8854359, 18875392, 40024059, 84417521, 177221602, 370688979, 773342163, 1610612736, 3350668423, 6964989333, 14466833194, 30021724351, 62233946303]

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

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