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.

A290655 Theta series of the 20-dimensional lattice of hyper-roots A_3(SU(3)).

Table of values

n a(n)
0 1
1 0
2 0
3 240
4 1782
5 9072
6 59328
7 216432
8 810000
9 2059152
10 6080832
11 12349584
12 31045596
13 57036960
14 122715648
15 204193872
16 418822650
17 622067040
18 1193611392
19 1734272208
20 3043596384
21 4217152080
22 7354100160
23 9446435136
24 15901091892
25 20507712192
26 32268036096
27 40493364288
28 64454759856

List of values

[1, 0, 0, 240, 1782, 9072, 59328, 216432, 810000, 2059152, 6080832, 12349584, 31045596, 57036960, 122715648, 204193872, 418822650, 622067040, 1193611392, 1734272208, 3043596384, 4217152080, 7354100160, 9446435136, 15901091892, 20507712192, 32268036096, 40493364288, 64454759856]

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

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