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.

A185621 Column 1 of triangular matrix T = A185620, which satisfies: T^3 - T^2 + I = SHIFT_LEFT(T).

Table of values

n a(n)
0 1
1 1
2 3
3 10
4 42
5 226
6 1525
7 12555
8 123098
9 1408656
10 18499835
11 274937571
12 4569703790
13 84104161618
14 1699644180677
15 37442806230267
16 893577983768401
17 22976420374082264
18 633487846228307145
19 18649221873212499505

List of values

[1, 1, 3, 10, 42, 226, 1525, 12555, 123098, 1408656, 18499835, 274937571, 4569703790, 84104161618, 1699644180677, 37442806230267, 893577983768401, 22976420374082264, 633487846228307145, 18649221873212499505]

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

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