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.

A364367 An irregular triangle read by rows, the 4th row-symmetric Fibonaccian triangle: T(n,k) is the Whitney number of level k of the (4,n)-th symmetric Fibonaccian lattice (0 <= n, 0 <= k <= 3*n).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 2
7 3
8 3
9 3
10 2
11 1
12 1
13 3
14 6
15 8
16 10
17 10
18 8
19 6
20 3
21 1
22 1
23 4
24 10
25 17
26 25
27 31
28 33
29 31
30 25
31 17
32 10
33 4
34 1
35 1
36 5
37 15
38 31
39 53
40 77
41 98
42 110
43 110
44 98
45 77
46 53
47 31
48 15
49 5
50 1
51 1
52 6
53 21
54 51
55 100
56 166
57 242
58 313
59 364
60 383
61 364
62 313
63 242
64 166
65 100
66 51
67 21
68 6
69 1

List of values

[1, 1, 1, 1, 1, 1, 2, 3, 3, 3, 2, 1, 1, 3, 6, 8, 10, 10, 8, 6, 3, 1, 1, 4, 10, 17, 25, 31, 33, 31, 25, 17, 10, 4, 1, 1, 5, 15, 31, 53, 77, 98, 110, 110, 98, 77, 53, 31, 15, 5, 1, 1, 6, 21, 51, 100, 166, 242, 313, 364, 383, 364, 313, 242, 166, 100, 51, 21, 6, 1]