A105542 - OEIS

%I #3 Mar 30 2012 18:36:45

%S 1,2,1,4,4,1,6,8,6,1,13,14,14,8,1,26,47,26,22,10,1,33,58,115,42,32,12,

%T 1,75,133,102,229,62,44,14,1,101,292,393,158,401,86,58,16,1,172,285,

%U 791,921,226,643,114,74,18,1,356,950,631,1758,1849,306,967,146,92,20,1,633

%N Matrix square of triangle A105540 and, in this flattened form as read by rows, also equals column 1 of A105540.

%C Column n of triangular matrix A105540 equals A105540^(n+1) when flattened as read by rows.

%e Triangle begins:

%e 1;

%e 2,1;

%e 4,4,1;

%e 6,8,6,1;

%e 13,14,14,8,1;

%e 26,47,26,22,10,1;

%e 33,58,115,42,32,12,1;

%e 75,133,102,229,62,44,14,1;

%e 101,292,393,158,401,86,58,16,1;

%e 172,285,791,921,226,643,114,74,18,1; ...

%Y Cf. A105540, A105543 (column 0), A105544 (row sums).

%K nonn,tabl

%O 0,2

%A _Paul D. Hanna_, Apr 13 2005