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A237654 as a simple table

na(n)
01
10
25
35
425
549
6150
7365
8990
92550
106726
1117550
1246015
13120390
14315275
15825299
162160775
175656855
1814809980
1938772875
20101508876
21265753500
22695751900
231821501900
244768754125
2512484760124
2632685526625
2785571819345
28224029931845
29586517975725
301535523995826
314020054011225
3210524638038410

[1,0,5,5,25,49,150,365,990,2550,6726,17550,46015,
 120390,315275,825299,2160775,5656855,14809980,
 38772875,101508876,265753500,695751900,1821501900,
 4768754125,12484760124,32685526625,85571819345,
 224029931845,586517975725,1535523995826,
 4020054011225,10524638038410]