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A188716 as a simple table

na(n)
01
11
24
315
446
5125
6316
7763
81786
94089
109208
1120471
1245046
1398293
14212980
15458739
16983026
172097137
184456432
199437167
2019922926
2141943021
2288080364
23184549355
24385875946
25805306345
261677721576
273489660903
287247757286
2915032385509
3031138512868
3164424509411
32133143986146
33274877906913
34566935683040
351168231104479

[1,1,4,15,46,125,316,763,1786,4089,9208,20471,
 45046,98293,212980,458739,983026,2097137,4456432,
 9437167,19922926,41943021,88080364,184549355,
 385875946,805306345,1677721576,3489660903,
 7247757286,15032385509,31138512868,64424509411,
 133143986146,274877906913,566935683040,
 1168231104479]