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A168639 as a simple table

na(n)
00
11
22
34
45
57
610
715
821
929
1040
1156
1278
13108
14149
15206
16285
17394
18544
19751
201037
211432
221977
232729
243767
255200
267178
279908
2813676
2918877
3026056
3135965
3249642
3368520
3494577
35130543
36180186
37248707
38343285
39473829
40654016
41902724
421246010
431719840
442373857
453276582

[0,1,2,4,5,7,10,15,21,29,40,56,78,108,149,206,285,
 394,544,751,1037,1432,1977,2729,3767,5200,7178,
 9908,13676,18877,26056,35965,49642,68520,94577,
 130543,180186,248707,343285,473829,654016,902724,
 1246010,1719840,2373857,3276582]