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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.

A090770 a(n) = 2^(n^2 + 2n + 1)*Product_{j=1..n} (4^j - 1).

Table of values

n a(n)
0 2
1 48
2 23040
3 185794560
4 24257337753600
5 50821645356918374400
6 1704875112338069448032256000
7 915241991059360703024740763172864000
8 7861748876453505095791592854589753555681280000
9 1080506416218846625176535970968094253434513802154475520000
10 2376056471052200653607636735377527394627947719754523173734842368000000

List of values

[2, 48, 23040, 185794560, 24257337753600, 50821645356918374400, 1704875112338069448032256000, 915241991059360703024740763172864000, 7861748876453505095791592854589753555681280000, 1080506416218846625176535970968094253434513802154475520000, 2376056471052200653607636735377527394627947719754523173734842368000000]

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

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