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A271188 as a simple table

na(n)
10
21
348
43654
5546604
6173123868
7120268341210
8186894023900240
9657585270869505423
105280815619326228961327
1197334193255656777198310662
124134298293573473978291399679465
13405905093869786965065628534801801735

[0,1,48,3654,546604,173123868,120268341210,
 186894023900240,657585270869505423,
 5280815619326228961327,97334193255656777198310662,
 4134298293573473978291399679465,
 405905093869786965065628534801801735]