login
The OEIS is supported by the many generous donors to the OEIS Foundation.

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”).

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

A323131 as a simple table

na(n)
11
27
347
4303
51921
611963
774130
8454484
92779152
1016882278
11102384151
12618136584
133727827148
1422408576099
15134595908277
16806452390868

[1,7,47,303,1921,11963,74130,454484,2779152,
 16882278,102384151,618136584,3727827148,
 22408576099,134595908277,806452390868]

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified January 13 07:49 EST 2025. Contains 379826 sequences.
License Agreements, Terms of Use, Privacy Policy