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A177790 as a simple table

na(n)
01
12
26
314
434
584
6208
7518
81296
93254
108196
1120700
1252404
13132942
14337878
15860142
162192902
175598144
1814308378
1936610970
2093770358
21240390602
22616787116
231583765724
244069672444
2510464501074
2626924530158
2769315481778
28178545361842
29460138256784

[1,2,6,14,34,84,208,518,1296,3254,8196,20700,
 52404,132942,337878,860142,2192902,5598144,
 14308378,36610970,93770358,240390602,616787116,
 1583765724,4069672444,10464501074,26924530158,
 69315481778,178545361842,460138256784]