A250011 - OEIS

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A250011 as a simple table

n	a(n)
1	28860
2	125780
3	558588
4	2499284
5	11215276
6	50383892
7	226419876
8	1018508340
9	4583261868
10	20627283972
11	92840297420
12	417874928740
13	1880910672572
14	8466508542340
15	38110873552548
16	171552910101524
17	772235459619948

[28860,125780,558588,2499284,11215276,50383892, 226419876,1018508340,4583261868,20627283972, 92840297420,417874928740,1880910672572, 8466508542340,38110873552548,171552910101524, 772235459619948]