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A345418 as a triangular array

1
-11
-211
-32-11
-5-2111
-643-2-11
-8-4-21111
-96-5-322-11
-11-6721-1-211
-148456-5-2-1-11
-1510-9-8-31232-11
-18-1061074-3-4-3-111

A345418 as a square array

1-1-2-3-5-6-8-9-11-14-15-18
112-24-46-6810-10
1-113-2-574-96
11-21-325-810
1-11216-37
112-1-514
1-1-2-22-3
11-13-4
1-12-3
1-1-1
11
1
1-1-2-3-5-6-8-9-11-14-15-18
112-24-46-6810-10
1-113-2-574-96
11-21-325-810
1-11216-37
112-1-514
1-1-2-22-3
11-13-4
1-12-3
1-1-1
11
1