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.

A049737 a(n) = Sum_{i=0..2n} (-1)^i * T(i,2n-i), array T as in A049735.

Table of values

n a(n)
0 1
1 17
2 49
3 125
4 213
5 361
6 433
7 617
8 805
9 1029
10 1345
11 1585
12 1801
13 2149
14 2461
15 2977
16 3305
17 3709
18 4013
19 4557
20 5057
21 5689
22 6085
23 6661
24 7117
25 8025
26 8689
27 9205
28 10005
29 10649
30 11281
31 12225
32 12941
33 13893
34 14449
35 15649
36 16297
37 17493

List of values

[1, 17, 49, 125, 213, 361, 433, 617, 805, 1029, 1345, 1585, 1801, 2149, 2461, 2977, 3305, 3709, 4013, 4557, 5057, 5689, 6085, 6661, 7117, 8025, 8689, 9205, 10005, 10649, 11281, 12225, 12941, 13893, 14449, 15649, 16297, 17493]