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A014739 as a simple table

na(n)
01
12
25
39
416
527
645
774
8121
9197
10320
11519
12841
131362
142205
153569
165776
179347
1815125
1924474
2039601
2164077
22103680
23167759
24271441
25439202
26710645
271149849
281860496
293010347
304870845
317881194
3212752041
3320633237
3433385280
3554018519
3687403801

[1,2,5,9,16,27,45,74,121,197,320,519,841,1362,
 2205,3569,5776,9347,15125,24474,39601,64077,
 103680,167759,271441,439202,710645,1149849,
 1860496,3010347,4870845,7881194,12752041,20633237,
 33385280,54018519,87403801]