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.

A049640 a(n) = Sum_{i=0..n} T(i,n-i), array T as in A049639.

Table of values

n a(n)
0 0
1 0
2 2
3 4
4 7
5 10
6 15
7 20
8 27
9 34
10 45
11 56
12 69
13 82
14 101
15 120
16 143
17 166
18 195
19 224
20 257
21 290
22 333
23 376
24 423
25 470
26 529
27 588
28 653
29 718
30 791
31 864
32 945
33 1026
34 1123
35 1220
36 1323
37 1426
38 1547
39 1668
40 1797
41 1926
42 2067
43 2208
44 2359
45 2510
46 2683
47 2856
48 3037
49 3218
50 3419
51 3620
52 3833
53 4046
54 4277
55 4508

List of values

[0, 0, 2, 4, 7, 10, 15, 20, 27, 34, 45, 56, 69, 82, 101, 120, 143, 166, 195, 224, 257, 290, 333, 376, 423, 470, 529, 588, 653, 718, 791, 864, 945, 1026, 1123, 1220, 1323, 1426, 1547, 1668, 1797, 1926, 2067, 2208, 2359, 2510, 2683, 2856, 3037, 3218, 3419, 3620, 3833, 4046, 4277, 4508]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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