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A261473 as a simple table

na(n)
00
12
210
340
4116
5296
6699
71557
83325
96893
1013964
1127789
1254536
13105854
14203645
15388970
16738596
171395718
182626914
194927664
209217604
2117201570
2232036763
2359564873
24110586325
25205056292
26379823379
27702897160
281299744979
292401747773
304435467036
318187063102

[0,2,10,40,116,296,699,1557,3325,6893,13964,27789,
 54536,105854,203645,388970,738596,1395718,2626914,
 4927664,9217604,17201570,32036763,59564873,
 110586325,205056292,379823379,702897160,
 1299744979,2401747773,4435467036,8187063102]