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.

A134290 Ninth column (and diagonal) of Narayana triangle A001263.

Table of values

n a(n)
0 1
1 45
2 825
3 9075
4 70785
5 429429
6 2147145
7 9202050
8 34763300
9 118195220
10 367479684
11 1057896060
12 2848181700
13 7229999700
14 17420856420
15 40067969766
16 88385227425
17 187746398125
18 385374185625
19 766691800875
20 1482270815025
21 2791289197125
22 5130235085625
23 9219552907500

List of values

[1, 45, 825, 9075, 70785, 429429, 2147145, 9202050, 34763300, 118195220, 367479684, 1057896060, 2848181700, 7229999700, 17420856420, 40067969766, 88385227425, 187746398125, 385374185625, 766691800875, 1482270815025, 2791289197125, 5130235085625, 9219552907500]

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

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