login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A225171 as a triangular array

2
44
32248
4163049616
75525440176032032
17612812582441280800096064
501862435660801180928237440313602688128
16896819211961446439875584821273611468801111047168256

A225171 as a square array

243241675521761285018624168968192
42430454401258243566080119614464
896176041280118092839875584
1632080002374408212736
32960313601146880
642688111104
1287168
256
243241675521761285018624168968192
42430454401258243566080119614464
896176041280118092839875584
1632080002374408212736
32960313601146880
642688111104
1287168
256