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A178704 as a simple table

na(n)
00
10
21
34
415
549
6153
7465
81402
94213
1012648
1137954
12113874
13341634
141024915
153074758
169224289
1727672883
1883018667
19249056019
20747168076
212241504247
226724512762
2320173538308
2460520614948
25181561844868

[0,0,1,4,15,49,153,465,1402,4213,12648,37954,
 113874,341634,1024915,3074758,9224289,27672883,
 83018667,249056019,747168076,2241504247,
 6724512762,20173538308,60520614948,181561844868]