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”).

A163672 as a triangular array

11
1419
172431
20293847
2334455667
263952657891
2944597489104119
32496683100117134151
35547392111130149168187
385980101122143164185206227
416487110133156179

A163672 as a square array

1114172023262932353841
19242934394449545964
313845525966738087
475665748392101110
677889100111122133
91104117130143156
119134149164179
151168185
187206
227
1114172023262932353841
19242934394449545964
313845525966738087
475665748392101110
677889100111122133
91104117130143156
119134149164179
151168185
187206
227