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.

A137358 a(n) = Sum_{k <= n/2 } binomial(n-2k, 3k+2).

Table of values

n a(n)
0 0
1 0
2 1
3 3
4 6
5 10
6 15
7 22
8 34
9 57
10 101
11 181
12 319
13 549
14 928
15 1557
16 2617
17 4427
18 7536
19 12872
20 21992
21 37513
22 63862
23 108575
24 184524
25 313701
26 533619
27 908140
28 1545839
29 2631240
30 4478044
31 7619870
32 12964858
33 22058847
34 37533077
35 63865592
36 108676262
37 184929945
38 314685488

List of values

[0, 0, 1, 3, 6, 10, 15, 22, 34, 57, 101, 181, 319, 549, 928, 1557, 2617, 4427, 7536, 12872, 21992, 37513, 63862, 108575, 184524, 313701, 533619, 908140, 1545839, 2631240, 4478044, 7619870, 12964858, 22058847, 37533077, 63865592, 108676262, 184929945, 314685488]