A009540 - OEIS

%I #5 Mar 30 2012 18:35:07

%S 1,10,45,120,210,1,263,55,376,12,330,66,1,815,1,78,495,14,749,91,807,

%T 1,715,364,105,16,1,4180,1,18,136,560,1365,1,2021,153,2397,20,1820,

%U 171,1,4632,1,190,2380,22,3973,210,4391,1,3060,1140,231,24,1,18559,1,26,276

%N "Pascal sweep" for k=9: draw a horizontal line through the 1 at C(k,0) in Pascal's triangle; rotate this line and record the sum of the numbers on it (excluding the initial 1).

%K nonn

%O 1,2

%A _David W. Wilson_