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A115327 as a simple table

na(n)
01
11
24
310
446
5166
6856
73844
821820
9114076
10703216
114125496
1227331624
13175849480
141241782816
158627460976
1664507687696
17478625814544
183768517887040
1929614311872416
20244419831433696
212021278543778656
2217419727924101504

[1,1,4,10,46,166,856,3844,21820,114076,703216,
 4125496,27331624,175849480,1241782816,8627460976,
 64507687696,478625814544,3768517887040,
 29614311872416,244419831433696,2021278543778656,
 17419727924101504]