login

A128180 as a triangular array

1
-12
2-13
-23-14
3-24-15
-34-25-16
4-35-26-17
-45-36-27-18
5-46-37-28-19
-56-47-38-29-110

A128180 as a square array

1-12-23-34-45-5
2-13-24-35-46
3-14-25-36-4
4-15-26-37
5-16-27-3
6-17-28
7-18-2
8-19
9-1
10
1-12-23-34-45-5
2-13-24-35-46
3-14-25-36-4
4-15-26-37
5-16-27-3
6-17-28
7-18-2
8-19
9-1
10