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A375963 as a simple table

na(n)
01
11
21
32
41
53
66
74
810
920
105
1135
1270
1328
14126
15252
1642
17462
18924
19264
201716
213432
22715
236435
2412870
252860
2624310
2748620
2812376
2992378
30184756
3133592
32352716
33705432
3458786
351352078
362704156
37416024
385200300
3910400600
40742900
4120058300
4240116600
435348880

[1,1,1,2,1,3,6,4,10,20,5,35,70,28,126,252,42,462,
 924,264,1716,3432,715,6435,12870,2860,24310,48620,
 12376,92378,184756,33592,352716,705432,58786,
 1352078,2704156,416024,5200300,10400600,742900,
 20058300,40116600,5348880]