A360631 - OEIS

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A360631 as a simple table

n	a(n)
1	2
2	4
3	10
4	22
5	44
6	91
7	172
8	326
9	595
10	1066
11	1849
12	3204
13	5365
14	8921
15	14581
16	23558
17	37440
18	59127
19	91957
20	142060
21	217015
22	328939
23	493917
24	737249
25	1090432
26	1603439
27	2341094

[2,4,10,22,44,91,172,326,595,1066,1849,3204,5365, 8921,14581,23558,37440,59127,91957,142060,217015, 328939,493917,737249,1090432,1603439,2341094]