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A279139 as a simple table

na(n)
01
12
22
312
47
560
63
7246
816
9995
1036
114043
12112
1316347
1480
1565419
16208
17262027
1864
191048227
20540
214193303
221540
2316776635
24426
2567106688
265231
27268427872
289519
291073731776
304079
314294922240
3267567
3317179777024
34163247
3568719263872
36343311
37274877424848

[1,2,2,12,7,60,3,246,16,995,36,4043,112,16347,80,
 65419,208,262027,64,1048227,540,4193303,1540,
 16776635,426,67106688,5231,268427872,9519,
 1073731776,4079,4294922240,67567,17179777024,
 163247,68719263872,343311,274877424848]