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A151974 as a simple table

na(n)
00
115
290
3315
4840
51890
63780
76930
811880
919305
1030030
1145045
1265520
1392820
14128520
15174420
16232560
17305235
18395010
19504735
20637560
21796950
22986700
231210950
241474200
251781325
262137590
272548665
283020640
293560040
304173840
314869480
325654880
336538455
347529130

[0,15,90,315,840,1890,3780,6930,11880,19305,30030,
 45045,65520,92820,128520,174420,232560,305235,
 395010,504735,637560,796950,986700,1210950,
 1474200,1781325,2137590,2548665,3020640,3560040,
 4173840,4869480,5654880,6538455,7529130]