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A011768 as a simple table

na(n)
10
21
31
41
51
62
73
86
97
1016
1121
1243
1363
14129
15203
16404
17685
181343
192385
204625
218492
2216409
2330735
2459290
25112530
26217182
27415620
28803076
291545463
302990968
315778267
3211201472
3321702686
3442140890
3581830744
36159139498
37309590883
38602935713
391174779333
402290915478

[0,1,1,1,1,2,3,6,7,16,21,43,63,129,203,404,685,
 1343,2385,4625,8492,16409,30735,59290,112530,
 217182,415620,803076,1545463,2990968,5778267,
 11201472,21702686,42140890,81830744,159139498,
 309590883,602935713,1174779333,2290915478]