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A178119 as a simple table

na(n)
01
12
25
316
464
5308
61727
711008
878244
9611060
105184338
1147366320
12462782080
134807659368
1452853722811
15612426360832
167453621425532
1794997205901940
181264555335831662
1917540102647480336
20252979919852470672

[1,2,5,16,64,308,1727,11008,78244,611060,5184338,
 47366320,462782080,4807659368,52853722811,
 612426360832,7453621425532,94997205901940,
 1264555335831662,17540102647480336,
 252979919852470672]