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A254722 as a simple table

na(n)
12630
214226
376615
4364039
51645201
67620738
735110289
8160937385
9741804750
103423993877
1115810300788
1273052896500
13337690620252
141561140321305
157217837292719
1633373602812501
17154315577978901
18713547491791682

[2630,14226,76615,364039,1645201,7620738,35110289,
 160937385,741804750,3423993877,15810300788,
 73052896500,337690620252,1561140321305,
 7217837292719,33373602812501,154315577978901,
 713547491791682]