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.

A049713 a(n) = Sum_{i=0..2n} (-1)^i * T(i,2n-i), array T as in A048149.

Table of values

n a(n)
0 1
1 8
2 17
3 38
4 63
5 102
6 121
7 170
8 217
9 276
10 359
11 422
12 473
13 562
14 643
15 776
16 861
17 966
18 1041
19 1176
20 1303
21 1468
22 1569
23 1712
24 1825
25 2056
26 2225
27 2358
28 2565
29 2722
30 2877
31 3116
32 3301
33 3540
34 3681
35 3982
36 4145
37 4446
38 4631
39 4984
40 5161
41 5314

List of values

[1, 8, 17, 38, 63, 102, 121, 170, 217, 276, 359, 422, 473, 562, 643, 776, 861, 966, 1041, 1176, 1303, 1468, 1569, 1712, 1825, 2056, 2225, 2358, 2565, 2722, 2877, 3116, 3301, 3540, 3681, 3982, 4145, 4446, 4631, 4984, 5161, 5314]