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A268501 as a simple table

na(n)
01
10
22
36
411
532
660
7148
8279
9690
101312
112778
125684
1311282
1422920
1544724
1687919
17168978
18329800
19623086
201189794
212235744
224189442
237795642
2414438670
2526577246
2648616050
2788724110
28160629612
29290267100
30521225220
31933031364
321661954928
332950946220

[1,0,2,6,11,32,60,148,279,690,1312,2778,5684,
 11282,22920,44724,87919,168978,329800,623086,
 1189794,2235744,4189442,7795642,14438670,26577246,
 48616050,88724110,160629612,290267100,521225220,
 933031364,1661954928,2950946220]