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A008826 as a simple table

na(n)
21
31
43
51
613
718
81
950
10205
11180
121
13201
141865
154245
162700
171
18875
1916674
2074165
21114345
2256700
231
244138
25155477
261208830
273394790
283919860
291587600
301
3121145
321542699
3319800165
3490265560
35182184030
36167310360
3757153600
381
39115973
4016385857
41335976195
422338275240
437342024200
4411471572350
458719666200
462571912000

[1,1,3,1,13,18,1,50,205,180,1,201,1865,4245,2700,
 1,875,16674,74165,114345,56700,1,4138,155477,
 1208830,3394790,3919860,1587600,1,21145,1542699,
 19800165,90265560,182184030,167310360,57153600,1,
 115973,16385857,335976195,2338275240,7342024200,
 11471572350,8719666200,2571912000]