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A264925 as a simple table

na(n)
01
10
20
30
40
51
65
715
835
970
10127
11215
12360
13605
141080
152003
163890
177570
1814715
1927960
2052255
2195705
22173295
23311060
24557400
25999032
261795880
273235130
285835955
2910521060
3018931287
3133956485
3260692510
33108087835
34191883595
35339724144
36600203700
371058605775
381864535670
393279862975
405762287759
4110109925380

[1,0,0,0,0,1,5,15,35,70,127,215,360,605,1080,2003,
 3890,7570,14715,27960,52255,95705,173295,311060,
 557400,999032,1795880,3235130,5835955,10521060,
 18931287,33956485,60692510,108087835,191883595,
 339724144,600203700,1058605775,1864535670,
 3279862975,5762287759,10109925380]