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”).

A135087 as a triangular array

1
33
373
311113
31523153
3193939193
323597959233
3278313913983273
331111223279223111313
335143335503503335143353

A135087 as a square array

1333333333
3711151923273135
31123395983111143
3153979139223335
31959139279503
32383223503
327111335
331143
335
3
1333333333
3711151923273135
31123395983111143
3153979139223335
31959139279503
32383223503
327111335
331143
335
3