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A293368 as a simple table

na(n)
447
5544
64232
725100
8136516
9666800
103142884
1114024256
1261637303
13262474700
141109010890
154603058016
1619018730793
1777751623552
18317106002688
191284961711836
205199893190893
2120961427995916
2284431958561230
23339292817869492
241362880886322817
255466605564267372

[47,544,4232,25100,136516,666800,3142884,14024256,
 61637303,262474700,1109010890,4603058016,
 19018730793,77751623552,317106002688,
 1284961711836,5199893190893,20961427995916,
 84431958561230,339292817869492,1362880886322817,
 5466605564267372]