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A257272 as a simple table

na(n)
04
19
222
360
4184
5624
62272
78640
833664
9132864
10527872
112104320
128402944
1333583104
14134275072
15536985600
162147713024
178590393344
1834360655872
19137440788480
20549759483904
212199030595584
228796107702272
2335184401448960
24140737547075584
25562950070861824
262251800048566272
279007199724503040

[4,9,22,60,184,624,2272,8640,33664,132864,527872,
 2104320,8402944,33583104,134275072,536985600,
 2147713024,8590393344,34360655872,137440788480,
 549759483904,2199030595584,8796107702272,
 35184401448960,140737547075584,562950070861824,
 2251800048566272,9007199724503040]