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Matrix inverse of A155091.
4

%I #7 Feb 10 2014 01:30:23

%S 1,1,1,1,1,1,2,2,1,1,3,3,2,1,1,6,6,4,2,1,1,11,11,7,4,2,1,1,22,22,14,8,

%T 4,2,1,1,42,42,27,15,8,4,2,1,1,84,84,54,30,16,8,4,2,1,1,165,165,106,

%U 59,31,16,8,4,2,1,1,330,330,212,118,62,32,16,8,4,2,1,1,654,654,420,234,123,63

%N Matrix inverse of A155091.

%C First column is A002083. Rows sums are A045690.

%C Eigentriangle of A101688. - _Paul Barry_, Mar 01 2011

%e Table begins:

%e 1,

%e 1,1,

%e 1,1,1,

%e 2,2,1,1,

%e 3,3,2,1,1,

%e 6,6,4,2,1,1,

%e 11,11,7,4,2,1,1,

%e 22,22,14,8,4,2,1,1,

%e 42,42,27,15,8,4,2,1,1,

%e 84,84,54,30,16,8,4,2,1,1,

%Y Cf. A002083, A045690.

%K nonn,tabl

%O 1,7

%A _Mats Granvik_, Jan 20 2009