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A140796 as a simple table

na(n)
01
15
214
344
4128
5392
61160
73512
810472
931544
1094376
11283640
12849896
132551736
147651112
1522961528
1668868200
17206637368
18619846568
191859670776
205578750184
2116736774840
2250209275944
23150629924984
24451885580648
251355665130552

[1,5,14,44,128,392,1160,3512,10472,31544,94376,
 283640,849896,2551736,7651112,22961528,68868200,
 206637368,619846568,1859670776,5578750184,
 16736774840,50209275944,150629924984,451885580648,
 1355665130552]