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A063887 as a simple table

na(n)
01
14
212
348
4172
5688
62576
710304
839340
9157360
10607376
112429504
129442448
1337769792
14147495104
15589980416
162311926188
179247704752
1836333781776
19145335127104
20572189853200
212288759412800
229025822792896
2336103291171584
24142567754881168
25570271019524672
262254477964009664
279017911856038656

[1,4,12,48,172,688,2576,10304,39340,157360,607376,
 2429504,9442448,37769792,147495104,589980416,
 2311926188,9247704752,36333781776,145335127104,
 572189853200,2288759412800,9025822792896,
 36103291171584,142567754881168,570271019524672,
 2254477964009664,9017911856038656]