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”).

A080044 as a triangular array

1
11
111
1441
1198191
110717171071
13918117181391
12934792182184792931
162110581351436135110586211
1586910327456361961945631032758691
16121368575411767761917677

A080044 as a square array

11111111111
114191073929362158696121
148171814791058103273685
1191717218135145637541
110718121843661917677
1394791351619619
12931058456317677
162110327
15869
1
11111111111
114191073929362158696121
148171814791058103273685
1191717218135145637541
110718121843661917677
1394791351619619
12931058456317677
162110327
15869
1