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A291419 as a simple table

na(n)
01
11
22
34
410
524
660
7148
8376
9944
102392
116032
1215280
1338608
1497728
15247104
16625312
171581568
184001680
1910122624
2025610368
2164787520
22163907904
23414654848
241049031104
252653873152
266713958912
2716985280000
2842970438432
29108708830336
30275018076928
31695755635328
321760162851328

[1,1,2,4,10,24,60,148,376,944,2392,6032,15280,
 38608,97728,247104,625312,1581568,4001680,
 10122624,25610368,64787520,163907904,414654848,
 1049031104,2653873152,6713958912,16985280000,
 42970438432,108708830336,275018076928,
 695755635328,1760162851328]