A293274 - OEIS

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A293274 as a simple table

n	a(n)
1	1
2	2
3	4
4	5
5	11
6	28
7	34
8	35
9	36
10	49
11	65
12	90
13	126
14	1878
15	2089
16	3266
17	3818
18	6485
19	7710
20	8539
21	20603
22	34764
23	51283
24	176964
25	258494

[1,2,4,5,11,28,34,35,36,49,65,90,126,1878,2089, 3266,3818,6485,7710,8539,20603,34764,51283,176964, 258494]