A124221 - OEIS

%I #2 Mar 31 2012 13:23:38

%S 1,2,4,8,0,14,2,22,9,1,0,32,25,5,2,44,54,16,12,0,2,0,58,100,38,42,2,

%T 13,2,1,74,167,75,110,9,51,15,7,1,0,3,0,92,259,131,240,25,146,63,28,5,

%U 5,24,2,1,3,112,380,210,462,54,340,193,80,16,29,111,18,11,25,0,2,0,0,1,4,0

%N Triangle read by rows: add A124222(n,k) to A124222(n-1,k).

%C Row sums are powers of 2. Row sum sequence for A124222 is A001045.

%F A124221(n,k) = A124222(n,k) + A124222(n-1,k) for n>0

%e A124222 begins

%e 0

%e 1

%e 1

%e 3

%e 5 0

%e 9 2

%e 13 7 1 0

%e so A124221 begins

%e 1

%e 2

%e 4

%e 8 0

%e 14 2

%e 22 9 1 0

%Y Cf. A000079 A001045 A124222.

%K easy,nonn,tabf

%O 1,2

%A _Alford Arnold_, Oct 23 2006