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”).

A209437 as a triangular array

1
03
028
00719
0041743
000143994
00083788201
00002883192423
00001674181408880
00000561753878551815
000003214837782417753719
00000

A209437 as a square array

100000000000
32000000000
8740000000
191714800000
4339372816000
948883745632
201192181175148
423408387377
880855824
18151775
3719
100000000000
32000000000
8740000000
191714800000
4339372816000
948883745632
201192181175148
423408387377
880855824
18151775
3719