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A263219 as a simple table

na(n)
14
272
31009
412601
5198892
63345984
756362801
8951167305
916140651460
10274301213400
114662032059249
1279241699410777
131347050532750556
1422899642182348976
15389291621638482865
166617932860469046761

[4,72,1009,12601,198892,3345984,56362801,
 951167305,16140651460,274301213400,4662032059249,
 79241699410777,1347050532750556,22899642182348976,
 389291621638482865,6617932860469046761]