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A107722
Matrix square of triangle A107721, read by rows.
2
1, 2, 1, 12, 4, 1, 114, 32, 6, 1, 1446, 364, 62, 8, 1, 22722, 5276, 854, 102, 10, 1, 424302, 92332, 14466, 1664, 152, 12, 1, 9168162, 1889012, 289222, 32536, 2874, 212, 14, 1, 224961774, 44207212, 6652522, 737472, 63886, 4564, 282, 16, 1, 6180211842
OFFSET
0,2
COMMENTS
Matrix (2/3)-power of triangle A107717. SHIFT_LEFT of column 0 = 2*(column 1 of A107717). Matrix inverse is A107728.
EXAMPLE
Triangle begins:
1;
2,1;
12,4,1;
114,32,6,1;
1446,364,62,8,1;
22722,5276,854,102,10,1;
424302,92332,14466,1664,152,12,1;
9168162,1889012,289222,32536,2874,212,14,1; ...
PROG
(PARI)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Paul D. Hanna, May 30 2005
STATUS
approved