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A269778 as a simple table

na(n)
140
2624
33816
415040
545600
6115920
7259504
8527616
9994680
101764400
112976600
124814784
137514416
1411371920
1516754400
1624110080
1733979464
1847007216
1963954760
2085713600
21113319360
22147966544
23191024016
24244051200
25308815000
26387307440

[40,624,3816,15040,45600,115920,259504,527616,
 994680,1764400,2976600,4814784,7514416,11371920,
 16754400,24110080,33979464,47007216,63954760,
 85713600,113319360,147966544,191024016,244051200,
 308815000,387307440]