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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.

A374982 a(n) = (1/3)*Product_{k=0..n} (F(k)+3), where F=A000045 (Fibonacci numbers).

Table of values

n a(n)
0 1
1 4
2 16
3 80
4 480
5 3840
6 42240
7 675840
8 16220160
9 600145920
10 34808463360
11 3202378629120
12 470749658480640
13 111096919401431040
14 42216829372543795200
15 25878916405369346457600
16 25620127241315652993024000
17 40992203586105044788838400000

List of values

[1, 4, 16, 80, 480, 3840, 42240, 675840, 16220160, 600145920, 34808463360, 3202378629120, 470749658480640, 111096919401431040, 42216829372543795200, 25878916405369346457600, 25620127241315652993024000, 40992203586105044788838400000]

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

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