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.

A358990 a(n) is the product of the first n odd numbers not divisible by 5.

Table of values

n a(n)
0 1
1 1
2 3
3 21
4 189
5 2079
6 27027
7 459459
8 8729721
9 183324141
10 4216455243
11 113844291561
12 3301484455269
13 102346018113339
14 3377418597740187
15 124964488116386919
16 4873615036539089841
17 199818216498102683481
18 8592183309418415389683
19 403832615542665523315101
20 19787798161590610642439949

List of values

[1, 1, 3, 21, 189, 2079, 27027, 459459, 8729721, 183324141, 4216455243, 113844291561, 3301484455269, 102346018113339, 3377418597740187, 124964488116386919, 4873615036539089841, 199818216498102683481, 8592183309418415389683, 403832615542665523315101, 19787798161590610642439949]

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

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