A192309 - OEIS

A192309 as a simple table

n	a(n)
1	2
2	2
3	10
4	21
5	49
6	100
7	200
8	384
9	722
10	1331
11	2419
12	4344
13	7726
14	13630
15	23882
16	41601
17	72101
18	124412
19	213844
20	366300
21	625522
22	1065247
23	1809575
24	3067056
25	5187674
26	8758010
27	14760010
28	24835629
29	41727577
30	70012756

[2,2,10,21,49,100,200,384,722,1331,2419,4344,7726, 13630,23882,41601,72101,124412,213844,366300, 625522,1065247,1809575,3067056,5187674,8758010, 14760010,24835629,41727577,70012756]