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”).

A286625 as a triangular array

1
13
144
1665
181077
1121411169
1142215361910
118262378412111
120342714485452213
124383522215591463115
130463932423516592713416
1325847438341247166155763617
1386259668457357248287162803718

A286625 as a square array

1111111111111
34681214182024303238
46101422263438465862
571115232735394759
7163678144222324438668
9194185155235341457
10214591165247357
11224692166248
133171155287
153476162
163680
1737
18
1111111111111
34681214182024303238
46101422263438465862
571115232735394759
7163678144222324438668
9194185155235341457
10214591165247357
11224692166248
133171155287
153476162
163680
1737
18