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A152401
Column 1 of triangle A152400; also, column 1 of square array A152405.
6
1, 2, 8, 45, 318, 2671, 25805, 280609, 3381993, 44658052, 640279918, 9895457035, 163871617543, 2893296199441, 54230087607409, 1075060346670798, 22467666780553040, 493590689966427930, 11369641989418301977
OFFSET
0,2
COMMENTS
Matrix powers of triangle T=A152400 satisfy: column k of T^(j+1) = column j of T^(k+1) for all j>=0, k>=0.
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 05 2008
STATUS
approved