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.

A277175 Convolution of Catalan numbers and factorial numbers.

Table of values

n a(n)
0 1
1 2
2 5
3 15
4 53
5 222
6 1120
7 6849
8 50111
9 427510
10 4142900
11 44693782
12 529276962
13 6813205468
14 94642629984
15 1410507388421
16 22445134308123
17 379776665469030
18 6808016435182620
19 128886547350655050
20 2569493300908367550
21 53805226930896987540
22 1180673761078007109840

List of values

[1, 2, 5, 15, 53, 222, 1120, 6849, 50111, 427510, 4142900, 44693782, 529276962, 6813205468, 94642629984, 1410507388421, 22445134308123, 379776665469030, 6808016435182620, 128886547350655050, 2569493300908367550, 53805226930896987540, 1180673761078007109840]

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

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