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A230623 as a simple table

na(n)
14
215
352
4240
51121
64888
720047
877280
9277441
101093425
115279468
1223647519
1399429196
14393425745
151457109628
164968639359
1724553864319
18113193708472
19488133974353
201980778750800
217547952442399
2226710380775592
23112605054449252

[4,15,52,240,1121,4888,20047,77280,277441,1093425,
 5279468,23647519,99429196,393425745,1457109628,
 4968639359,24553864319,113193708472,488133974353,
 1980778750800,7547952442399,26710380775592,
 112605054449252]