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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.

A374344 a(n) is the number of ways n can be written as a sum of a practical number and two heptagonal numbers.

Table of values

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

List of values

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

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