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A346761 as a simple table

na(n)
10
20
30
41
55
615
735
869
9126
10205
11330
12479
13715
14966
151360
161750
172380
182919
193876
204634
215950
226985
238855
2410062
2512645
2614235
2717424
2819473
2923751
3025820
3131465
3234140
3340590
3443996
3552320
3655365
3766045
3869939
3981536
4086476
41101270
42104964
43123410
44128435
45147504

[0,0,0,1,5,15,35,69,126,205,330,479,715,966,1360,
 1750,2380,2919,3876,4634,5950,6985,8855,10062,
 12645,14235,17424,19473,23751,25820,31465,34140,
 40590,43996,52320,55365,66045,69939,81536,86476,
 101270,104964,123410,128435,147504]