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.

A217444 a(n) = A(n)*7^(-floor(n+1)/3), where A(n) = 7*A(n-1) - 14*A(n-2) + 7*A(n-3) with A(0)=0, A(1)=1, A(2)=7.

Table of values

n a(n)
0 0
1 1
2 1
3 5
4 22
5 13
6 52
7 204
8 113
9 435
10 1667
11 910
12 3471
13 13224
14 7192
15 27367
16 104105
17 56563
18 215098
19 817909
20 444276
21 1689212
22 6422529
23 3488381
24 13262821
25 50424942
26 27387681
27 104126704
28 395884336
29 215018609
30 817488295
31 3108041875
32 1688083894
33 6417991803
34 24400809980

List of values

[0, 1, 1, 5, 22, 13, 52, 204, 113, 435, 1667, 910, 3471, 13224, 7192, 27367, 104105, 56563, 215098, 817909, 444276, 1689212, 6422529, 3488381, 13262821, 50424942, 27387681, 104126704, 395884336, 215018609, 817488295, 3108041875, 1688083894, 6417991803, 24400809980]