%I #2 Mar 30 2012 18:37:20
%S 1,2,5,23,171,1770,23128,359326,6397582,127481106,2798191975,
%T 66906139414,1728471631521,47946527974230,1421014299626478,
%U 44813786218342428,1498598183095006145,52978138615818746064
%N Column 0 of the matrix square of triangle A167015.
%C This sequence equals the reversal of row 2 of A167015 (when infinitely extended to the left), and then shifted left 1 place.
%C In triangle T=A167015, row n of T equals the initial n terms in column 0 of matrix power T^n, reversed and with an appended '1'.
%C The definition of A167015 may be relaxed to allow the triangle to extend indefinitely also to the left, making each row infinite.
%Y Cf. A167015, rows: A167016, A167143, A167144, A167145.
%K nonn
%O 0,2
%A _Paul D. Hanna_, Oct 28 2009