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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.

A357782 a(n) = Sum_{k=0..floor(n/3)} 2^k * Stirling2(n,3*k).

Table of values

n a(n)
0 1
1 0
2 0
3 2
4 12
5 50
6 184
7 686
8 2996
9 16642
10 110328
11 784190
12 5645876
13 40685762
14 296458344
15 2226254766
16 17564381332
17 147289101090
18 1312394060536
19 12305546886398
20 119906479624084
21 1202273551045474
22 12341175064817576
23 129582557972751918
24 1394497073432776756

List of values

[1, 0, 0, 2, 12, 50, 184, 686, 2996, 16642, 110328, 784190, 5645876, 40685762, 296458344, 2226254766, 17564381332, 147289101090, 1312394060536, 12305546886398, 119906479624084, 1202273551045474, 12341175064817576, 129582557972751918, 1394497073432776756]

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

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