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A300489 as a simple table

na(n)
00
11
25
365
41766
583674
66124584
7639826452
890328291248
916558780949136
103823322392154880
111085461798576638240
12371610484248792556800
13150961314165968542273920
1471790302154674639506682880
1539506878580692178250399571200
1624909116615180033772524150937600

[0,1,5,65,1766,83674,6124584,639826452,
 90328291248,16558780949136,3823322392154880,
 1085461798576638240,371610484248792556800,
 150961314165968542273920,
 71790302154674639506682880,
 39506878580692178250399571200,
 24909116615180033772524150937600]