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A180906 as a triangular array

1
12
135
141213
15225135
163513022696
17512658031025267
1870471210050854724750
199276345561707532747220222123
11011711568715452411412462134191035506046
111145

A180906 as a square array

11111111111
234567891011
5122235517092117145
13511302654717631156
35226803210045568715
96102550851707545241
267472432747141246
75022022213419
2123103550
6046
11111111111
234567891011
5122235517092117145
13511302654717631156
35226803210045568715
96102550851707545241
267472432747141246
75022022213419
2123103550
6046