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.

A128196 a(n) = (2*n - 1)*a(n - 1) + 2^n for n >= 1, a(0) = 1.

Table of values

n a(n)
0 1
1 3
2 13
3 73
4 527
5 4775
6 52589
7 683785
8 10257031
9 174370039
10 3313031765
11 69573669113
12 1600194393695
13 40004859850567
14 1080131215981693
15 31323805263501865
16 971037963168623351
17 32044252784564701655
18 1121548847459764820069
19 41497307356011298866841
20 1618394986884440656855375

List of values

[1, 3, 13, 73, 527, 4775, 52589, 683785, 10257031, 174370039, 3313031765, 69573669113, 1600194393695, 40004859850567, 1080131215981693, 31323805263501865, 971037963168623351, 32044252784564701655, 1121548847459764820069, 41497307356011298866841, 1618394986884440656855375]