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A181645 as a triangular array

1
-11
-1-11
-2-2-11
-5-5-3-11
-14-14-9-4-11
-42-42-28-14-5-11
-132-132-90-48-20-6-11
-429-429-297-165-75-27-7-11
-1430-1430-1001-572-275-110-35-8-11
-4862-4862-3432

A181645 as a square array

1-1-1-2-5-14-42-132-429-1430-4862
1-1-2-5-14-42-132-429-1430-4862
1-1-3-9-28-90-297-1001-3432
1-1-4-14-48-165-572
1-1-5-20-75-275
1-1-6-27-110
1-1-7-35
1-1-8
1-1
1
1-1-1-2-5-14-42-132-429-1430-4862
1-1-2-5-14-42-132-429-1430-4862
1-1-3-9-28-90-297-1001-3432
1-1-4-14-48-165-572
1-1-5-20-75-275
1-1-6-27-110
1-1-7-35
1-1-8
1-1
1