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A307004 as a simple table

na(n)
11
28
332
4128
5864
62048
73456
87776
931104
10279936
11497664
121990656
134478976
1417915904
1562208000
1697200000
17362797056
18559872000
19874800000
201555200000
216220800000
2213996800000
2355987200000
24349920000000
25895795200000
261133740800000
271399680000000
284534963200000

[1,8,32,128,864,2048,3456,7776,31104,279936,
 497664,1990656,4478976,17915904,62208000,97200000,
 362797056,559872000,874800000,1555200000,
 6220800000,13996800000,55987200000,349920000000,
 895795200000,1133740800000,1399680000000,
 4534963200000]