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A156362 as a simple table

na(n)
01
17
256
3441
43528
528126
6225008
71798349
814386792
9115060722
10920485776
117363180314
1258905442512
13471228010428
143769824083424
1530158239367445
16241265914939560
171930119075851050
1815440952606808400
19123527424655229966

[1,7,56,441,3528,28126,225008,1798349,14386792,
 115060722,920485776,7363180314,58905442512,
 471228010428,3769824083424,30158239367445,
 241265914939560,1930119075851050,
 15440952606808400,123527424655229966]