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A307090 as a triangular array

1
11
111
1111
11011
11-2-211
11-5-8-511
11-9-17-17-911
11-14-29-34-29-1411
11-20-44-54-54-44-2011
11-27-62-74-74-74-62-2711
11-35-83-90-74-74-90-83-3511

A307090 as a square array

111111111111
11111111111
110-2-5-9-14-20-27-35
11-2-8-17-29-44-62-83
11-5-17-34-54-74-90
11-9-29-54-74-74
11-14-44-74-74
11-20-62-90
11-27-83
11-35
11
1
111111111111
11111111111
110-2-5-9-14-20-27-35
11-2-8-17-29-44-62-83
11-5-17-34-54-74-90
11-9-29-54-74-74
11-14-44-74-74
11-20-62-90
11-27-83
11-35
11
1