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A108891 as a triangular array

2
24
688
22282416
90112966432
39448441628816064
1806220018961344800384128
8558103648952644840002112896256
41586501444339231616201601126453762048512

A108891 as a square array

22622903941806855841586
482811248422001036450144
824964161896895243392
16642881344644831616
32160800400020160
64384211211264
1288965376
2562048
512
22622903941806855841586
482811248422001036450144
824964161896895243392
16642881344644831616
32160800400020160
64384211211264
1288965376
2562048
512