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.

A145130 2 + (89040 + (71868 + (29932 + (8449 + (1960 + (322 + (28 + n)*n)*n)*n)*n)*n)*n)*n/40320.

Table of values

n a(n)
0 2
1 7
2 25
3 81
4 236
5 622
6 1498
7 3334
8 6931
9 13586
10 25312
11 45124
12 77403
13 128351
14 206551
15 323647
16 495160
17 741457
18 1088891
19 1571131
20 2230702
21 3120756
22 4307096
23 5870476
24 7909201
25 10542052
26 13911562
27 18187670
28 23571781
29 30301261
30 38654397
31 48955853
32 61582654

List of values

[2, 7, 25, 81, 236, 622, 1498, 3334, 6931, 13586, 25312, 45124, 77403, 128351, 206551, 323647, 495160, 741457, 1088891, 1571131, 2230702, 3120756, 4307096, 5870476, 7909201, 10542052, 13911562, 18187670, 23571781, 30301261, 38654397, 48955853, 61582654]