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.

A246860 Expected value of trace(O)^(2n), where O is a 4 X 4 orthogonal matrix randomly selected according to Haar measure.

Table of values

n a(n)
1 1
2 3
3 15
4 105
5 903
6 8778
7 92235
8 1023165
9 11821953
10 141061206
11 1727926291
12 21634600078
13 275950576450
14 3576315994020
15 46995014634435
16 625082431593285
17 8403885851894445
18 114069364107664350
19 1561609592248119645
20 21543838447412548410
21 299299110959202973710

List of values

[1, 3, 15, 105, 903, 8778, 92235, 1023165, 11821953, 141061206, 1727926291, 21634600078, 275950576450, 3576315994020, 46995014634435, 625082431593285, 8403885851894445, 114069364107664350, 1561609592248119645, 21543838447412548410, 299299110959202973710]

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

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