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.

A369496 a(n) = [x^(n*(n+1)/2)] Product_{k=1..n} (x^(k*(k+1)/2) + 1 + 1/x^(k*(k+1)/2)).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 4
6 8
7 20
8 47
9 104
10 246
11 607
12 1496
13 3751
14 9579
15 24720
16 64327
17 168932
18 446830
19 1188030
20 3177198
21 8541152
22 23063100
23 62550085
24 170337684
25 465564180
26 1276779917
27 3512617527
28 9692054125
29 26815357935
30 74381739478
31 206820705565
32 576371104028

List of values

[1, 1, 1, 1, 2, 4, 8, 20, 47, 104, 246, 607, 1496, 3751, 9579, 24720, 64327, 168932, 446830, 1188030, 3177198, 8541152, 23063100, 62550085, 170337684, 465564180, 1276779917, 3512617527, 9692054125, 26815357935, 74381739478, 206820705565, 576371104028]