A084080 - OEIS

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A084080 as a simple table

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	9
7	15
8	22
9	52
10	91
11	140
12	340
13	612
14	969
15	2394
16	4389
17	7084
18	17710
19	32890
20	53820
21	135720
22	254475
23	420732
24	1068012
25	2017356
26	3362260
27	8579560
28	16301164
29	27343888
30	70068713

[1,1,1,2,3,4,9,15,22,52,91,140,340,612,969,2394, 4389,7084,17710,32890,53820,135720,254475,420732, 1068012,2017356,3362260,8579560,16301164,27343888, 70068713]