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A370480 as a simple table

na(n)
01
13
215
373
4360
51800
69112
746632
8240936
91255336
106589080
1134811784
12184990568
13988156872
145303039256
1528579068520
16154605138984
17839272725864
184570409517848
1924961191298248
20136688674353000
21750355591919240
224128471397725336
2322762905189252264

[1,3,15,73,360,1800,9112,46632,240936,1255336,
 6589080,34811784,184990568,988156872,5303039256,
 28579068520,154605138984,839272725864,
 4570409517848,24961191298248,136688674353000,
 750355591919240,4128471397725336,
 22762905189252264]