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A356888 as a simple table

na(n)
11
23
312
444
5144
6432
71216
83264
98448
1021248
1152224
12125952
13299008
14700416
151622016
163719168
178454144
1819070976
1942729472
2095158272
21210763776
22464519168
231019215872
242227175424
254848615424
2610519314432
2722749904896
2849056579584
29105495134208
30226291089408

[1,3,12,44,144,432,1216,3264,8448,21248,52224,
 125952,299008,700416,1622016,3719168,8454144,
 19070976,42729472,95158272,210763776,464519168,
 1019215872,2227175424,4848615424,10519314432,
 22749904896,49056579584,105495134208,226291089408]