login

A051720 as a simple table

na(n)
01
11
22
32
4-1
5-4
6-1
78
87
9-44
10-2663
11368
121247
13-244
14-1511
1543416
161623817
17-276356
18-10405289
19-21376
2021491081
2132209348
22-2523785339
23-107638072
241827648887
25842271812
26-11254630547
27-17380760743952
28596303510772251

[1,1,2,2,-1,-4,-1,8,7,-44,-2663,368,1247,-244,
 -1511,43416,1623817,-276356,-10405289,-21376,
 21491081,32209348,-2523785339,-107638072,
 1827648887,842271812,-11254630547,-17380760743952,
 596303510772251]