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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.

A143074 Numerator of Euler(n,2).

Table of values

n a(n)
0 1
1 3
2 2
3 9
4 2
5 3
6 2
7 33
8 2
9 -27
10 2
11 699
12 2
13 -5457
14 2
15 929601
16 2
17 -3202287
18 2
19 221930589
20 2
21 -4722116517
22 2
23 968383680843
24 2
25 -14717667114147
26 2
27 2093660879252679
28 2
29 -86125672563201177
30 2
31 129848163681107302017
32 2
33 -868320396104950823607
34 2
35 209390615747646519456969

List of values

[1, 3, 2, 9, 2, 3, 2, 33, 2, -27, 2, 699, 2, -5457, 2, 929601, 2, -3202287, 2, 221930589, 2, -4722116517, 2, 968383680843, 2, -14717667114147, 2, 2093660879252679, 2, -86125672563201177, 2, 129848163681107302017, 2, -868320396104950823607, 2, 209390615747646519456969]

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

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