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A155977 as a simple table

na(n)
00
12
240
3270
41088
53250
67992
717150
833280
959778
10101000
11162382
12250560
13373490
14540568
15762750
161052672
171424770
181895400
192482958
203208000
214093362
225164280
236448510
247976448
259781250
2611898952
2714368590
2817232320
2920535538

[0,2,40,270,1088,3250,7992,17150,33280,59778,
 101000,162382,250560,373490,540568,762750,1052672,
 1424770,1895400,2482958,3208000,4093362,5164280,
 6448510,7976448,9781250,11898952,14368590,
 17232320,20535538]