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.

A304864 O.g.f. A(x) satisfies: [x^n] exp( n*(n+3) * x ) / A(x) = 0 for n>0.

Table of values

n a(n)
0 1
1 4
2 26
3 288
4 5012
5 122608
6 3869456
7 148838816
8 6721823600
9 347434618432
10 20180665251360
11 1299399587904384
12 91769604540962816
13 7049102617933604352
14 584848346900868001792
15 52109481481410100183552
16 4961586770799906448318208
17 502707358017324652042259456
18 54000226687663791374322245120
19 6129804668943947684749062516736
20 733179029209444818691965317379072

List of values

[1, 4, 26, 288, 5012, 122608, 3869456, 148838816, 6721823600, 347434618432, 20180665251360, 1299399587904384, 91769604540962816, 7049102617933604352, 584848346900868001792, 52109481481410100183552, 4961586770799906448318208, 502707358017324652042259456, 54000226687663791374322245120, 6129804668943947684749062516736, 733179029209444818691965317379072]