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A119640 Related to number of reachable pairs in a digraph (see Rao article for details). 1

%I

%S 0,1,4,9,12,20,30,42,56,72,90,99,120,143,168,195,224,255,288,323,360,

%T 378,418,460,504,550,598,648,700,754,810,868,928,990,1054,1085,1152,

%U 1221,1292,1365,1440,1517,1596,1677,1760,1845,1932,2021,2112

%N Related to number of reachable pairs in a digraph (see Rao article for details).

%D A. R. Rao, The number of reachable pairs in a digraph, Discr. Math., 306 (2006), 1595-1600.

%H A. R. Rao, <a href="/A119640/b119640.txt">Table of n, a(n) for n = 1..200</a>

%K nonn

%O 1,3

%A _N. J. A. Sloane_, Jul 27 2006

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Last modified June 16 13:25 EDT 2019. Contains 324152 sequences. (Running on oeis4.)