A110329 - OEIS

%I #2 Mar 30 2012 18:59:09

%S 1,2,11,76,727,8694,125221,2107448,40577501,879557050,21193809151,

%T 561950634852,16258832340451,509717865337646,17211690137010377,

%U 622780718533047664,24039198822957409081,985985136339748008498

%N Diagonal sums of a number triangle related to the Pell numbers.

%C Diagonal sums of A110327.

%F a(n)=sum{k=0..floor(n/2), (n-k)!*Pell(n-2k+1)/k!}

%Y Cf. A000129.

%K easy,nonn

%O 0,2

%A _Paul Barry_, Jul 20 2005