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.

A261724 a(n) is the number of ways of putting n labeled balls into 4 indistinguishable boxes such that each box contains at least 3 balls.

Table of values

n a(n)
12 15400
13 200200
14 1611610
15 10335325
16 57962905
17 297797500
18 1439774336
19 6662393738
20 29844199346
21 130445781284
22 559533979466
23 2365296391535
24 9885290914059
25 40944327590760
26 168389163468240
27 688631376550260
28 2803570746766140
29 11373212443859760
30 46006062639998890

List of values

[15400, 200200, 1611610, 10335325, 57962905, 297797500, 1439774336, 6662393738, 29844199346, 130445781284, 559533979466, 2365296391535, 9885290914059, 40944327590760, 168389163468240, 688631376550260, 2803570746766140, 11373212443859760, 46006062639998890]