A116684 - OEIS

A116684 as a simple table

n	a(n)
0	0
1	0
2	2
3	2
4	4
5	6
6	14
7	18
8	22
9	34
10	50
11	66
12	88
13	118
14	154
15	202
16	248
17	320
18	412
19	512
20	636
21	794
22	972
23	1194
24	1454
25	1766
26	2134
27	2576
28	3092
29	3696
30	4426
31	5254
32	6214
33	7364
34	8672
35	10196
36	11986
37	14014
38	16360
39	19084
40	22190
41	25746
42	29860
43	34516
44	39846
45	45952
46	52848

[0,0,2,2,4,6,14,18,22,34,50,66,88,118,154,202,248, 320,412,512,636,794,972,1194,1454,1766,2134,2576, 3092,3696,4426,5254,6214,7364,8672,10196,11986, 14014,16360,19084,22190,25746,29860,34516,39846, 45952,52848]