login

A156528 as a simple table

na(n)
01
11
23
32
49
535
66
738
8181
9735
1024
11202
121148
135395
1422449
15120
161284
178560
1845832
19213529
20902055
21720
229468
2373052
24440516
252275270
2610540509
2744990231
285040
2979344
30700380
314713740
3226783190
33135134070
34623527389
352681453775
3640320

[1,1,3,2,9,35,6,38,181,735,24,202,1148,5395,22449,
 120,1284,8560,45832,213529,902055,720,9468,73052,
 440516,2275270,10540509,44990231,5040,79344,
 700380,4713740,26783190,135134070,623527389,
 2681453775,40320]