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A258797 as a simple table

na(n)
01
11
22
36
416
551
6166
7554
81896
96595
1023212
1182582
12296393
131071738
143900696
1514278074
1652526972
17194108087
18720197524
192681854490
2010019539112
2137545876368
22141080872362
23531457445806
242006678785762
257593123695669
2628789152013570
27109356019134584

[1,1,2,6,16,51,166,554,1896,6595,23212,82582,
 296393,1071738,3900696,14278074,52526972,
 194108087,720197524,2681854490,10019539112,
 37545876368,141080872362,531457445806,
 2006678785762,7593123695669,28789152013570,
 109356019134584]