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A299923 as a simple table

na(n)
-1-1
00
11
22
33
47
560
6113
716664
833215
949766
10364913
111044973
121725033
1314480324
1427235615
1539990906
1652746197
1765501488
18405764219
192369083826
209070571085
2115772058344
2222473545603
2329175032862
2435876520121
2542578007380
2649279494639
2755980981898
2862682469157
2969383956416
3076085443675
3182786930934
3289488418193

[-1,0,1,2,3,7,60,113,16664,33215,49766,364913,
 1044973,1725033,14480324,27235615,39990906,
 52746197,65501488,405764219,2369083826,9070571085,
 15772058344,22473545603,29175032862,35876520121,
 42578007380,49279494639,55980981898,62682469157,
 69383956416,76085443675,82786930934,89488418193]