A152409 - OEIS

%I #2 Mar 30 2012 18:37:15

%S 1,3,18,150,1546,18642,254690,3861782,64059002,1150296082,22180511810,

%T 456345207854,9966036502994,230031203755906,5591166290510722,

%U 142661974171422254,3810825154126609202,106314217107440685858

%N Column 2 of triangle A152406; also, column 0 of matrix cube of A152406.

%C Matrix powers of triangle T=A152406 satisfy:

%C column k of T^(j+1) = column j of T^(k+1) for all j>=0, k>=0.

%Y Cf. A152406; A152407, A152408, A152410.

%K nonn

%O 0,2

%A _Paul D. Hanna_, Dec 05 2008