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A266888 as a simple table

na(n)
12
222
3322
45826
5116602
62507350
756777970
81336707816
932440959218
10806165939746
1120420782541546
12525394022266716
1313694383648911264
14360867862158985262
159598740400829938584
16257384054278121562390

[2,22,322,5826,116602,2507350,56777970,1336707816,
 32440959218,806165939746,20420782541546,
 525394022266716,13694383648911264,
 360867862158985262,9598740400829938584,
 257384054278121562390]