login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

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 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A257361 as a triangular array

220
784784
310821163108
121006724672412100
4568420449170562044945684
17472453824457964579653824174724
674856145924112236101124112236145924674856
2585664451584234256246016246016234256

A257361 as a square array

220784310812100456841747246748562585664
784211667242044953824145924451584
310867241705645796112236234256
121002044945796101124246016
4568453824112236246016
174724145924234256
674856

A257361 as an upper right triangle

220784310812100456841747246748562585664
784211667242044953824145924451584
310867241705645796112236234256
121002044945796101124246016
4568453824112236246016
174724145924234256
674856

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 7 07:01 EST 2021. Contains 349567 sequences. (Running on oeis4.)