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.

A368790 a(n) = (3*n-2)!!! * Sum_{k=0..n} 1/(3*k-2)!!!.

Table of values

n a(n)
0 1
1 2
2 9
3 64
4 641
5 8334
6 133345
7 2533556
8 55738233
9 1393455826
10 39016763129
11 1209519657000
12 41123668338001
13 1521575728506038
14 60863029140241521
15 2617110253030385404
16 120387071639397728585
17 5898966510330488700666
18 306746258537185412434633

List of values

[1, 2, 9, 64, 641, 8334, 133345, 2533556, 55738233, 1393455826, 39016763129, 1209519657000, 41123668338001, 1521575728506038, 60863029140241521, 2617110253030385404, 120387071639397728585, 5898966510330488700666, 306746258537185412434633]

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

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