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!)
A093448 Rows sums of the triangle A093447. 2

%I #9 Aug 08 2015 19:59:56

%S 1,5,32,316,4661,94217,2458810,80128082,3193424921,153067911301,

%T 8685693546692,574691476630760,43735137898763917,3784250198022172001,

%U 368841694500041857646,40194470526005627873182

%N Rows sums of the triangle A093447.

%e The row for n = 4 is

%e (1*2*3*4), (5*6*7), (8*9), 10 or

%e 24 210 72 10.

%e hence a(4) = 24 +210 +72 +10 = 316.

%p A000217 := proc(n) n*(n+1)/2 ; end: A093447 := proc(n,k) factorial(k*n-A000217(k-1))/factorial((k-1)*n-A000217(k-2)) ; end: A093448 := proc(n) add( A093447(n,k),k=1..n) ; end: for n from 1 to 26 do printf("%d, ",A093448(n)) ; od: # _R. J. Mathar_, Jul 27 2007

%Y Cf. A093445, A093446, A093447.

%K nonn

%O 1,2

%A _Amarnath Murthy_, Apr 02 2004

%E More terms from _R. J. Mathar_, Jul 27 2007

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 March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)