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A045680 as a simple table

na(n)
01
11
21
31
44
55
617
719
864
968
10245
11251
12900
13923
143411
153425
1612800
1712869
1848532
1948619
20184500
21184735
22705179
23705431
242703168
252704150
2610399675
2710400530
2840113164
2940116599
30155113825
31155117519
32601067520
33601080137
342333593349

[1,1,1,1,4,5,17,19,64,68,245,251,900,923,3411,
 3425,12800,12869,48532,48619,184500,184735,705179,
 705431,2703168,2704150,10399675,10400530,40113164,
 40116599,155113825,155117519,601067520,601080137,
 2333593349]