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A119640
Related to number of reachable pairs in a digraph (see Rao article for details).
1
0, 1, 4, 9, 12, 20, 30, 42, 56, 72, 90, 99, 120, 143, 168, 195, 224, 255, 288, 323, 360, 378, 418, 460, 504, 550, 598, 648, 700, 754, 810, 868, 928, 990, 1054, 1085, 1152, 1221, 1292, 1365, 1440, 1517, 1596, 1677, 1760, 1845, 1932, 2021, 2112
OFFSET
1,3
LINKS
A. R. Rao, The number of reachable pairs in a digraph, Discr. Math., 306 (2006), 1595-1600.
CROSSREFS
Sequence in context: A312868 A312869 A256887 * A332225 A186130 A051233
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 27 2006
STATUS
approved