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A281157 as a simple table

na(n)
01
11
26
325
478
5258
6800
72463
87344
921511
1061677
11173980
12483319
131323470
143577605
159553658
1625227727
1765918419
18170552866
19437196640
201110945961
212799689792
227000246591
2317372882671
2442809388080
25104774554942
26254771953179
27615667051237
281478934870484
293532347875968

[1,1,6,25,78,258,800,2463,7344,21511,61677,173980,
 483319,1323470,3577605,9553658,25227727,65918419,
 170552866,437196640,1110945961,2799689792,
 7000246591,17372882671,42809388080,104774554942,
 254771953179,615667051237,1478934870484,
 3532347875968]