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A130563 as a simple table

na(n)
31
436
5990
625740
7675675
818378360
9523783260
1015713497800
11496939367925
1216564645597500
13581419060472250
1421459648959248500
15831561397170879375
1633774185977401870000
171435402904039579475000
1863731888939357328690000

[1,36,990,25740,675675,18378360,523783260,
 15713497800,496939367925,16564645597500,
 581419060472250,21459648959248500,
 831561397170879375,33774185977401870000,
 1435402904039579475000,63731888939357328690000]