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A027555 as a triangular array

1
1-1
1-23
1-36-10
1-410-2035
1-515-3570-126
1-621-56126-252462
1-728-84210-462924-1716
1-836-120330-7921716-34326435
1-945-165495-12873003-643512870-24310
1-1055-220715-20025005-1144024310-4862092378

A027555 as a square array

11111111111
-1-2-3-4-5-6-7-8-9-10
3610152128364555
-10-20-35-56-84-120-165-220
3570126210330495715
-126-252-462-792-1287-2002
462924171630035005
-1716-3432-6435-11440
64351287024310
-24310-48620
92378
11111111111
-1-2-3-4-5-6-7-8-9-10
3610152128364555
-10-20-35-56-84-120-165-220
3570126210330495715
-126-252-462-792-1287-2002
462924171630035005
-1716-3432-6435-11440
64351287024310
-24310-48620
92378