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.

A273197 a(n) = denominator of T(n, 2) with T(n, m) = Sum_{k=0..n}( 1/(m*k+1) * Sum_{j=0..m*k} (-1)^j*C(k,j)*j^(m*n) ).

Table of values

n a(n)
0 1
1 3
2 15
3 105
4 15
5 1155
6 455
7 15
8 19635
9 95095
10 2145
11 31395
12 7735
13 2805
14 10818885
15 50115065
16 3315
17 596505
18 80925845
19 3795
20 18515805
21 221847535
22 2211105
23 204920500785
24 1453336885
25 148335
26 95055765
27 287558635
28 27897511785
29 397299047145
30 5613813089885
31 8897205

List of values

[1, 3, 15, 105, 15, 1155, 455, 15, 19635, 95095, 2145, 31395, 7735, 2805, 10818885, 50115065, 3315, 596505, 80925845, 3795, 18515805, 221847535, 2211105, 204920500785, 1453336885, 148335, 95055765, 287558635, 27897511785, 397299047145, 5613813089885, 8897205]