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A180272 as a simple table

na(n)
01
11
22
33
46
510
620
735
856
984
10210
11330
12495
13715
141001
153003
164368
176188
188568
1911628
2015504
2154264
2274613
23100947
24134596
25177100
26230230
27296010
281184040
291560780
302035800
312629575
323365856
334272048
345379616
356724520
3630260340
3738608020
3848903492

[1,1,2,3,6,10,20,35,56,84,210,330,495,715,1001,
 3003,4368,6188,8568,11628,15504,54264,74613,
 100947,134596,177100,230230,296010,1184040,
 1560780,2035800,2629575,3365856,4272048,5379616,
 6724520,30260340,38608020,48903492]