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A180691 as a simple table

na(n)
11
220736
335831808
4429981696
55159780352
661917364224
7743008370688
88916100448256
9953962166440690129601298432
10106993205379072
1111447545997288281555215581184
1212
13137370551967459378662586974208
14144
1515407021574586368
161648446623609512543951043690496

[1,20736,35831808,429981696,5159780352,
 61917364224,743008370688,8916100448256,
 953962166440690129601298432,106993205379072,
 11447545997288281555215581184,12,
 137370551967459378662586974208,144,
 15407021574586368,1648446623609512543951043690496]