A119639 Related to number of reachable pairs in a digraph (see Rao article for details).

1, 3, 6, 11, 17, 25, 34, 47, 59, 74, 91, 109, 129, 152, 176, 202, 229, 259, 290, 323, 358, 396, 435, 476, 518, 562, 609, 657, 707, 759, 812, 869, 927, 987, 1048, 1111, 1176, 1244, 1313, 1384, 1457, 1532, 1609, 1689, 1770, 1853, 1937, 2023, 2111

Offset

1,2

Links

A. R. Rao, Table of n, a(n) for n = 1..200

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

Crossrefs

Sequence in context: A176708 A273140 A320272 * A281376 A247586 A107957

Adjacent sequences: A119636 A119637 A119638 * A119640 A119641 A119642

Keyword

nonn

Author

N. J. A. Sloane, Jul 27 2006

Status

approved