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.

A374851 Obverse convolution A000040**A000040; see Comments.

Table of values

n a(n)
1 4
2 25
3 294
4 5184
5 169000
6 6350400
7 331218944
8 18517766400
9 1288408000000
10 124147372916736
11 12047030383804416
12 1481741383824000000
13 199987846858565222400
14 26836516406718627840000
15 3937581724026934119628800
16 668393794316928024576000000
17 130212266115912538521600000000
18 25085181032622344612780605440000

List of values

[4, 25, 294, 5184, 169000, 6350400, 331218944, 18517766400, 1288408000000, 124147372916736, 12047030383804416, 1481741383824000000, 199987846858565222400, 26836516406718627840000, 3937581724026934119628800, 668393794316928024576000000, 130212266115912538521600000000, 25085181032622344612780605440000]

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

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