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Column 0 of triangle A138271; also, column 3 of A138271 shift left; also, column 0 of matrix power A138271^4 shift right.
4

%I #2 Mar 30 2012 18:37:09

%S 1,1,4,28,268,3164,43672,682632,11834536,224283416,4597330748,

%T 101100605540,2370095338372,58924635472260,1546999678599872,

%U 42734731811302304,1238309697485975648,37538075865014728096

%N Column 0 of triangle A138271; also, column 3 of A138271 shift left; also, column 0 of matrix power A138271^4 shift right.

%Y Cf. A138271; A138273, A138274; A138275.

%K nonn

%O 0,3

%A _Paul D. Hanna_, Mar 11 2008