login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

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

A213948 as a triangular array

1
11
122
1444
171088
11224201616
1205256403232
133112144112806464
154238344320224160128128
188496828848640448320256256

A213948 as a square array

1111111111
12471220335488
24102452112238496
482056144344828
81640112320848
163280224640
3264160448
64128320
128256
256

A213948 as an upper right triangle

1111111111
12471220335488
24102452112238496
482056144344828
81640112320848
163280224640
3264160448
64128320
128256
256

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 14 12:04 EST 2019. Contains 329979 sequences. (Running on oeis4.)