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.

A104983 Row sums of triangular matrix T = A104980 which satisfies: SHIFT_LEFT(column 0 of T^p) = p*(column p+1 of T).

Table of values

n a(n)
0 1
1 2
2 6
3 24
4 122
5 750
6 5376
7 43856
8 400518
9 4046334
10 44808104
11 539850984
12 7032370302
13 98516491214
14 1477264979352
15 23612920280976
16 400847064718166
17 7202901369491694
18 136596819590256984
19 2726503675380494408

List of values

[1, 2, 6, 24, 122, 750, 5376, 43856, 400518, 4046334, 44808104, 539850984, 7032370302, 98516491214, 1477264979352, 23612920280976, 400847064718166, 7202901369491694, 136596819590256984, 2726503675380494408]

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

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