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A007309 as a simple table

na(n)
00
11
24
31
45
55
66
710
811
916
1021
1127
1237
1348
1464
1585
16112
17149
18197
19261
20346
21458
22607
23804
241065
251411
261869
272476
283280
294345
305756
317625
3210101
3313381
3417726
3523482
3631107
3741208
3854589
3972315
4095797

[0,1,4,1,5,5,6,10,11,16,21,27,37,48,64,85,112,149,
 197,261,346,458,607,804,1065,1411,1869,2476,3280,
 4345,5756,7625,10101,13381,17726,23482,31107,
 41208,54589,72315,95797]