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A000458 as a simple table

na(n)
01
11
22
34
410
525
649
788
8237
9500
101412
113570
1212846
1336072
14126504
15493920
162358720
1712292224
1849984224
19171237888
20642804078
211980490350
226380883000
2327032104440
24117961599600
25555861355920
262623445776224

[1,1,2,4,10,25,49,88,237,500,1412,3570,12846,
 36072,126504,493920,2358720,12292224,49984224,
 171237888,642804078,1980490350,6380883000,
 27032104440,117961599600,555861355920,
 2623445776224]