A100624 - OEIS

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A100624 as a simple table

n	a(n)
0	0
1	3
2	10
3	27
4	62
5	135
6	282
7	589
8	1204
9	2437
10	4904
11	9847
12	19734
13	39511
14	79066
15	158187
16	316430
17	632919
18	1265898
19	2531865
20	5063800
21	10127673
22	20255420
23	40510931

[0,3,10,27,62,135,282,589,1204,2437,4904,9847, 19734,39511,79066,158187,316430,632919,1265898, 2531865,5063800,10127673,20255420,40510931]