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”).

A205281 as a triangular array

256
35163184
4934213191839419
68790055579124826836484930
95990322331194986053596301752247005968388
13393249897697586667535639065065106769738637125848873466056
18687314004096812006689373958322702

A205281 as a square array

25635164934268790095990321339324981868731400
318413191855579122331194989769758666409681200668
394194826836605359630753563906509373958322702
48493017522470065106769738
59683886371258488
73466056
25635164934268790095990321339324981868731400
318413191855579122331194989769758666409681200668
394194826836605359630753563906509373958322702
48493017522470065106769738
59683886371258488
73466056