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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.

A378805 a(n) = n^2 * 2^n * binomial(4*n, n).

Table of values

n a(n)
0 0
1 8
2 448
3 15840
4 465920
5 12403200
6 310109184
7 7426298880
8 172331827200
9 3904310108160
10 86800438067200
11 1900523591622656
12 41092173674053632
13 879143252561100800
14 18640526785000243200
15 392189380800086016000
16 8196121945202522849280
17 170275478835299912515584
18 3519020291600950115696640

List of values

[0, 8, 448, 15840, 465920, 12403200, 310109184, 7426298880, 172331827200, 3904310108160, 86800438067200, 1900523591622656, 41092173674053632, 879143252561100800, 18640526785000243200, 392189380800086016000, 8196121945202522849280, 170275478835299912515584, 3519020291600950115696640]

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

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