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”).

A046726 as a triangular array

1
11
122
1364
14111610
1517374824
16246612614066
1732104254430428174
184115243895614541308504
195121169017963584497640721406
110622821023302872381325616880127964210

A046726 as a square array

11111111111
12345678910
2611172432415162
4163766104152211282
10481262544386901023
2414043095617963028
66428145435847238
1741308497613256
504407216880
140612796
4210
11111111111
12345678910
2611172432415162
4163766104152211282
10481262544386901023
2414043095617963028
66428145435847238
1741308497613256
504407216880
140612796
4210