A125785 - OEIS

%I #3 Mar 30 2012 18:37:02

%S 1,6,29,141,739,4276,27483,195978,1544074,13371684,126591212,

%T 1303252476,14517950305,174196495882,2241822436160,30826098464147,

%U 451299846525541,7012090426122158,115289977296253757,2000463474160276658

%N Column 5 of table A125781.

%C A091352 equals column 1 of both table A125781 and triangle A091351.

%F a(n) = A091352(n+2) - 2*A091352(n+1). a(n) = A125782(n+1) - A125783(n+1).

%e A091352 begins: [1, 2, 4, 9, 24, 77, 295, 1329, 6934, 41351, ...];

%e a(5) = A091352(8) - 2*A091352(7) = 6934 - 2*1329 = 4276.

%Y Cf. A125781; other columns: A091352, A125782, A125783, A125784, A125786.

%K nonn

%O 0,2

%A _Paul D. Hanna_, Dec 09 2006