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A331792 as a simple table

na(n)
01
18
257
3400
42810
519824
6140497
7999968
87143966
951206320
10368094122
112652720096
1219159794004
13138658606688
141005231020865
157299082678336
1653074479789878
17386419850997552
182816685368479342
1920553133273532000
20150120362670452076

[1,8,57,400,2810,19824,140497,999968,7143966,
 51206320,368094122,2652720096,19159794004,
 138658606688,1005231020865,7299082678336,
 53074479789878,386419850997552,2816685368479342,
 20553133273532000,150120362670452076]