A281645 - OEIS

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A281645 as a simple table

n	a(n)
1	0
2	2
3	3
4	6
5	8
6	24
7	36
8	38
9	45
10	47
11	57
12	68
13	69
14	125
15	672
16	690
17	999
18	1199
19	3512
20	4013
21	4208
22	12042
23	18492
24	21945
25	31158
26	43430
27	48548
28	117123

[0,2,3,6,8,24,36,38,45,47,57,68,69,125,672,690, 999,1199,3512,4013,4208,12042,18492,21945,31158, 43430,48548,117123]