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A046878 as a simple table

na(n)
00
11
21
35
42
58
613
7151
832
983
1073
111433
12647
1315341
1428211
1510447
161216
1719345
1818181
19651745
201542158
211463914
222786599
23122289917
2429229544
25140001721
26134354573
27774885169
28745984697
2941711914513
3080530073893
314825521853483

[0,1,1,5,2,8,13,151,32,83,73,1433,647,15341,28211,
 10447,1216,19345,18181,651745,1542158,1463914,
 2786599,122289917,29229544,140001721,134354573,
 774885169,745984697,41711914513,80530073893,
 4825521853483]