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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A026977 a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026659. 0

%I

%S 1,4,24,90,365,1376,7365,28002,121049,465004,2437089,9396986,41758527,

%T 162167568,842470494,3277804402,14798196587,57865149612,299015494394,

%U 1170434872374,5339682500573,20979019813768,107997589923134,424558473013940,1951503161793927,7693926097133316

%N a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026659.

%K nonn

%O 1,2

%A _Clark Kimberling_

%E More term from _Sean A. Irvine_, Oct 20 2019

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 10 11:03 EDT 2022. Contains 356039 sequences. (Running on oeis4.)