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A176951 as a simple table

na(n)
11
21
30
43
55
629
7152
8136
92016
1010959
1126840
121056437
132495955
1416311831
15102287808
161627690024
1710021808981
1825377192720
191085424779823
202681584376185
2117876295136009
22113220181313816
231933742696582736

[1,1,0,3,5,29,152,136,2016,10959,26840,1056437,
 2495955,16311831,102287808,1627690024,10021808981,
 25377192720,1085424779823,2681584376185,
 17876295136009,113220181313816,1933742696582736]