A041900 - OEIS

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A041900 as a simple table

n	a(n)
0	21
1	22
2	65
3	87
4	152
5	239
6	1108
7	5779
8	24224
9	30003
10	54227
11	84230
12	222687
13	306917
14	13113201
15	13420118
16	39953437
17	53373555
18	93326992
19	146700547
20	680129180
21	3547346447
22	14869514968
23	18416861415

[21,22,65,87,152,239,1108,5779,24224,30003,54227, 84230,222687,306917,13113201,13420118,39953437, 53373555,93326992,146700547,680129180,3547346447, 14869514968,18416861415]