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.

A303863 Number of pairs (lambda,mu) of partitions lambda of 2n+1 and mu of n+1 with mu <= lambda (by diagram containment).

Table of values

n a(n)
0 1
1 4
2 13
3 42
4 114
5 313
6 759
7 1858
8 4207
9 9468
10 20198
11 42955
12 87333
13 176706
14 346450
15 673619
16 1276936
17 2404288
18 4429895
19 8105634
20 14576610
21 26017631
22 45767924
23 79970030
24 137934105
25 236375455
26 400667547
27 674818625
28 1125626097
29 1866565406
30 3068368925
31 5015847315

List of values

[1, 4, 13, 42, 114, 313, 759, 1858, 4207, 9468, 20198, 42955, 87333, 176706, 346450, 673619, 1276936, 2404288, 4429895, 8105634, 14576610, 26017631, 45767924, 79970030, 137934105, 236375455, 400667547, 674818625, 1125626097, 1866565406, 3068368925, 5015847315]