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A042980 as a simple table

na(n)
11
20
30
41
51
62
75
86
915
1024
1145
1285
13155
14288
15550
161008
171935
183626
196885
2013107
2124940
2247616
2391225
24174590
25335626
26645120
271242600
282396745
294627915
308947294
3117318945
3233552384
3365076240
34126320640
35245424829
36477218560
37928638035
381808400384
393524082400
406871921458
4113408691175
4226178823218

[1,0,0,1,1,2,5,6,15,24,45,85,155,288,550,1008,
 1935,3626,6885,13107,24940,47616,91225,174590,
 335626,645120,1242600,2396745,4627915,8947294,
 17318945,33552384,65076240,126320640,245424829,
 477218560,928638035,1808400384,3524082400,
 6871921458,13408691175,26178823218]