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.

A291006 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - S - S^2 - S^3 - S^4.

Table of values

n a(n)
0 1
1 3
2 9
3 27
4 80
5 235
6 688
7 2013
8 5891
9 17244
10 50482
11 147791
12 432672
13 1266680
14 3708288
15 10856241
16 31782309
17 93044665
18 272394011
19 797450348
20 2334585333
21 6834643282
22 20008841823
23 58577124509
24 171488162320
25 502042223184
26 1469759722591
27 4302812676894

List of values

[1, 3, 9, 27, 80, 235, 688, 2013, 5891, 17244, 50482, 147791, 432672, 1266680, 3708288, 10856241, 31782309, 93044665, 272394011, 797450348, 2334585333, 6834643282, 20008841823, 58577124509, 171488162320, 502042223184, 1469759722591, 4302812676894]