A220470 - OEIS

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A220470 as a simple table

n	a(n)
1	1
2	6
3	12
4	20
5	55
6	42
7	56
8	72
9	144
10	110
11	253
12	156
13	351
14	336
15	240
16	272
17	1751
18	342
19	3420
20	500
21	672
22	506
23	1081
24	600
25	2525
26	702
27	1512
28	812
29	1711
30	930
31	992
32	1440

[1,6,12,20,55,42,56,72,144,110,253,156,351,336, 240,272,1751,342,3420,500,672,506,1081,600,2525, 702,1512,812,1711,930,992,1440]