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A248425 as a simple table

na(n)
10
20
30
40
51
64
711
826
957
10118
11235
12454
13857
141588
152899
165228
179333
1816520
1929031
2050702
2188077
22152290
23262239
24449930
25769461
261312104
272231591
283786456
296410857
3010832908
3118272195
3230769154
3351733857
3486859598
35145642579
36243907918
37408005393
38681773980
391138094971
401898045252
413162632157
425265345680

[0,0,0,0,1,4,11,26,57,118,235,454,857,1588,2899,
 5228,9333,16520,29031,50702,88077,152290,262239,
 449930,769461,1312104,2231591,3786456,6410857,
 10832908,18272195,30769154,51733857,86859598,
 145642579,243907918,408005393,681773980,
 1138094971,1898045252,3162632157,5265345680]