A111023 - OEIS

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A111023 as a simple table

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	8
7	16
8	20
9	27
10	115
11	180
12	274
13	576
14	1111
15	2404
16	5127
17	8082
18	9514
19	12808
20	14752
21	15926
22	22670
23	37432
24	41988
25	53707
26	72595
27	92742

[1,2,3,4,6,8,16,20,27,115,180,274,576,1111,2404, 5127,8082,9514,12808,14752,15926,22670,37432, 41988,53707,72595,92742]