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A049016 as a simple table

na(n)
01
15
215
335
470
5127
6220
7385
8715
91430
103004
116385
1213380
1327370
1454740
15107883
16211585
17416405
18826045
191652090
203321891
216690150
2213455325
2326985675
2453971350
25107746282
26214978335
27429124630
28857417220
291714834440
303431847189

[1,5,15,35,70,127,220,385,715,1430,3004,6385,
 13380,27370,54740,107883,211585,416405,826045,
 1652090,3321891,6690150,13455325,26985675,
 53971350,107746282,214978335,429124630,857417220,
 1714834440,3431847189]