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.

A256855 Number of ordered ways to write n as x*(3*x-1)/2 + y*(3*y+1)/2 + z*(3*z+1), where x and y are nonnegative integers and z is an integer.

Table of values

n a(n)
0 1
1 1
2 2
3 2
4 2
5 3
6 1
7 4
8 1
9 3
10 2
11 3
12 4
13 1
14 4
15 3
16 5
17 4
18 3
19 3
20 2
21 3
22 5
23 1
24 5
25 2
26 7
27 3
28 3
29 6
30 4
31 7
32 3
33 4
34 2
35 3
36 4
37 7
38 4
39 5
40 4
41 6
42 5
43 3
44 5
45 6
46 4
47 4
48 3
49 4
50 5
51 8
52 8
53 4
54 5
55 6
56 5
57 5
58 4
59 7
60 5
61 6
62 7
63 3
64 7
65 4
66 7
67 5
68 6
69 2
70 5
71 8
72 10
73 3
74 4
75 6
76 6
77 7
78 4
79 9
80 5
81 10
82 10
83 5
84 4
85 6
86 6
87 8
88 4
89 8
90 3
91 6
92 11
93 5
94 8
95 4
96 10
97 4
98 2
99 8
100 5

List of values

[1, 1, 2, 2, 2, 3, 1, 4, 1, 3, 2, 3, 4, 1, 4, 3, 5, 4, 3, 3, 2, 3, 5, 1, 5, 2, 7, 3, 3, 6, 4, 7, 3, 4, 2, 3, 4, 7, 4, 5, 4, 6, 5, 3, 5, 6, 4, 4, 3, 4, 5, 8, 8, 4, 5, 6, 5, 5, 4, 7, 5, 6, 7, 3, 7, 4, 7, 5, 6, 2, 5, 8, 10, 3, 4, 6, 6, 7, 4, 9, 5, 10, 10, 5, 4, 6, 6, 8, 4, 8, 3, 6, 11, 5, 8, 4, 10, 4, 2, 8, 5]