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.

A002177 Numerators of Cotesian numbers (not in lowest terms): A002176(n)*C(n,0).

Table of values

n a(n)
1 1
2 1
3 1
4 7
5 19
6 41
7 751
8 989
9 2857
10 16067
11 2171465
12 1364651
13 8181904909
14 90241897
15 35310023
16 15043611773
17 55294720874657
18 203732352169
19 69028763155644023
20 19470140241329
21 1022779523247467
22 396760150748100749

List of values

[1, 1, 1, 7, 19, 41, 751, 989, 2857, 16067, 2171465, 1364651, 8181904909, 90241897, 35310023, 15043611773, 55294720874657, 203732352169, 69028763155644023, 19470140241329, 1022779523247467, 396760150748100749]

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

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