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.

A317980 a(n) = Product_{i=1..n} floor(5*i/2).

Table of values

n a(n)
1 2
2 10
3 70
4 700
5 8400
6 126000
7 2142000
8 42840000
9 942480000
10 23562000000
11 636174000000
12 19085220000000
13 610727040000000
14 21375446400000000
15 790891516800000000
16 31635660672000000000
17 1328697748224000000000
18 59791398670080000000000
19 2810195737493760000000000

List of values

[2, 10, 70, 700, 8400, 126000, 2142000, 42840000, 942480000, 23562000000, 636174000000, 19085220000000, 610727040000000, 21375446400000000, 790891516800000000, 31635660672000000000, 1328697748224000000000, 59791398670080000000000, 2810195737493760000000000]

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

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