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A220325 as a simple table

na(n)
14
248
3572
46657
576627
6876714
710004541
8114058230
91299991681
1014816159113
11168863397427
121924606619479
1321935746576784
14250014218249170
152849559239020408
1632478119824983512
17370172462886188547

[4,48,572,6657,76627,876714,10004541,114058230,
 1299991681,14816159113,168863397427,1924606619479,
 21935746576784,250014218249170,2849559239020408,
 32478119824983512,370172462886188547]