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%I #3 Mar 30 2012 18:36:45
%S 1,3,1,9,6,1,21,21,9,1,51,54,39,12,1,142,165,111,63,15,1,325,507,387,
%T 198,93,18,1,722,1010,1332,753,321,129,21,1,1909,3346,2427,2905,1299,
%U 486,171,24,1,3507,6972,10724,4954,5586,2061,699,219,27,1,9110,15290
%N Matrix cube of triangle A105540 and, in this flattened form as read by rows, also equals column 2 of A105540.
%C Triangular matrix A105540 has the property that column n equals A105540^(n+1) when flattened as read by rows.
%e Triangle begins:
%e 1;
%e 3,1;
%e 9,6,1;
%e 21,21,9,1;
%e 51,54,39,12,1;
%e 142,165,111,63,15,1;
%e 325,507,387,198,93,18,1;
%e 722,1010,1332,753,321,129,21,1;
%e 1909,3346,2427,2905,1299,486,171,24,1;
%e 3507,6972,10724,4954,5586,2061,699,219,27,1; ...
%Y Cf. A105540, A105542.
%K nonn,tabl
%O 0,2
%A _Paul D. Hanna_, Apr 13 2005
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