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A194715 as a simple table

na(n)
00
115
245
390
4150
5225
6315
7420
8540
9675
10825
11990
121170
131365
141575
151800
162040
172295
182565
192850
203150
213465
223795
234140
244500
254875
265265
275670
286090
296525
306975
317440
327920
338415
348925
359450
369990
3710545
3811115
3911700
4012300
4112915
4213545
4314190
4414850
4515525

[0,15,45,90,150,225,315,420,540,675,825,990,1170,
 1365,1575,1800,2040,2295,2565,2850,3150,3465,3795,
 4140,4500,4875,5265,5670,6090,6525,6975,7440,7920,
 8415,8925,9450,9990,10545,11115,11700,12300,12915,
 13545,14190,14850,15525]