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.

A119725 Triangular array read by rows: T(n,1) = T(n,n) = 1, T(n,k) = 3*T(n-1,k-1) + 2*T(n-1,k).

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 5
6 1
7 1
8 13
9 17
10 1
11 1
12 29
13 73
14 53
15 1
16 1
17 61
18 233
19 325
20 161
21 1
22 1
23 125
24 649
25 1349
26 1297
27 485
28 1
29 1
30 253
31 1673
32 4645
33 6641
34 4861
35 1457
36 1
37 1
38 509
39 4105
40 14309
41 27217
42 29645
43 17497
44 4373
45 1
46 1
47 1021
48 9737
49 40933
50 97361
51 140941
52 123929
53 61237
54 13121
55 1

List of values

[1, 1, 1, 1, 5, 1, 1, 13, 17, 1, 1, 29, 73, 53, 1, 1, 61, 233, 325, 161, 1, 1, 125, 649, 1349, 1297, 485, 1, 1, 253, 1673, 4645, 6641, 4861, 1457, 1, 1, 509, 4105, 14309, 27217, 29645, 17497, 4373, 1, 1, 1021, 9737, 40933, 97361, 140941, 123929, 61237, 13121, 1]