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A243881 as a simple table

na(n)
01
11
22
35
414
541
61
7129
83
9419
1010
111395
1235
134737
14124
151
1616338
17454
184
1957086
201684
2116
22201642
236305
2465
25718855
2623781
27263
281
292583149
3090209
311077
325
339346594
34343809
354419
3623
3734023934
381315499
3918132
40105
41124519805
425050144
4374368
44472
451

[1,1,2,5,14,41,1,129,3,419,10,1395,35,4737,124,1,
 16338,454,4,57086,1684,16,201642,6305,65,718855,
 23781,263,1,2583149,90209,1077,5,9346594,343809,
 4419,23,34023934,1315499,18132,105,124519805,
 5050144,74368,472,1]