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”).

A082905 as a triangular array

1
11
121
1331
14241
15101051
1632361
172135352171
18456256481
1936312612633691
1105120102101205101
1115516533046246233016555111
1126437922792346121

A082905 as a square array

1111111111111
123456789101112
132103214365556
14102355631201654
153352126103303
1621561262462792
1743104622
1836120330792
1951653
110554
1116
112
1
1111111111111
123456789101112
132103214365556
14102355631201654
153352126103303
1621561262462792
1743104622
1836120330792
1951653
110554
1116
112
1