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A215453 as a simple table

na(n)
11
26
336
4192
53125
63888
7941192
812582912
9516560652
107500000000
11259374246010
12743008370688
13163086595857367
141190572159881216
15583858520507812500
1613835058055282163712
17437950726881001816329
183278867339608044797952
191874292305362402347591138
2078643200000000000000000000
212225747435575612389097571208

[1,6,36,192,3125,3888,941192,12582912,516560652,
 7500000000,259374246010,743008370688,
 163086595857367,1190572159881216,
 583858520507812500,13835058055282163712,
 437950726881001816329,3278867339608044797952,
 1874292305362402347591138,
 78643200000000000000000000,
 2225747435575612389097571208]