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A048077 as a simple table

na(n)
10
20
30
40
51
64
712
830
960
10121
11217
12364
13700
141260
152250
164960
179460
1817380
1938500
2071071
21126763
22276549
23503685
24898380
252006508
263681588
276619596
2814981556
2927412041
3049146654
31111406614
32202871284
33363087604
34828004144

[0,0,0,0,1,4,12,30,60,121,217,364,700,1260,2250,
 4960,9460,17380,38500,71071,126763,276549,503685,
 898380,2006508,3681588,6619596,14981556,27412041,
 49146654,111406614,202871284,363087604,828004144]