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A159336 as a simple table

na(n)
01
12
24
311
426
560
6139
7323
8751
91746
104059
119436
1221936
1350995
14118549
15275593
16640676
171489391
183462414
198049136
2018711971
2143500055
22101125359
23235087938
24546513151
251270488936
262953528444
276866120611
2815961793881
2937106668865

[1,2,4,11,26,60,139,323,751,1746,4059,9436,21936,
 50995,118549,275593,640676,1489391,3462414,
 8049136,18711971,43500055,101125359,235087938,
 546513151,1270488936,2953528444,6866120611,
 15961793881,37106668865]