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A143961 as a simple table

na(n)
01
12
23
35
49
516
628
750
893
9178
10342
11650
121223
132302
144383
158480
1616609
1732658
1863973
19124375
20240181
21462597
22893388
231737375
243407429
256729596
2613336532
2726415118
2852129356
29102359648
30200067986
31389989828
32760206585
331485887074
342917775247
355759836217

[1,2,3,5,9,16,28,50,93,178,342,650,1223,2302,4383,
 8480,16609,32658,63973,124375,240181,462597,
 893388,1737375,3407429,6729596,13336532,26415118,
 52129356,102359648,200067986,389989828,760206585,
 1485887074,2917775247,5759836217]