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A343010 as a simple table

na(n)
10
21
33
420
552
6357
7935
86408
916776
10114985
11301035
122063324
135401852
1437024845
1596932303
16664383888
171739379600
1811921885137
1931211900499
20213929548580
21560074829380
223838809989301
2310050135028343
2468884650258840
25180342355680792
261236084894669817

[0,1,3,20,52,357,935,6408,16776,114985,301035,
 2063324,5401852,37024845,96932303,664383888,
 1739379600,11921885137,31211900499,213929548580,
 560074829380,3838809989301,10050135028343,
 68884650258840,180342355680792,1236084894669817]