A333285 The main diagonal of the triangular array A333284.

5, 37, 405, 2225, 11641, 35677, 114409, 295701, 718469, 1475709, 3093025, 5771929, 10895273, 18785841, 31414269, 50274501, 81288641, 124066161, 190860537, 282399889, 411505049, 580614301, 824814797, 1138709849, 1570665877, 2115178249, 2833746309, 3732420861, 4937226173

Offset

1,1

Comments

See A332282, A333283, and A333284 for further information, illustrations, etc.

Links

Table of n, a(n) for n=1..29.

Lars Blomberg, Scott R. Shannon, N. J. A. Sloane, Graphical Enumeration and Stained Glass Windows, 1: Rectangular Grids, (2021). Also arXiv:2009.07918.

Seppo Mustonen, Statistical accuracy of geometric constructions, September 02, 2008.

Seppo Mustonen, Statistical accuracy of geometric constructions, 2008 [Local copy]

Seppo Mustonen, On lines and their intersection points in a rectangular grid of points, 2009

Seppo Mustonen, On lines and their intersection points in a rectangular grid of points, 2009 [Local copy]

Seppo Mustonen, On lines going through a given number of points in a rectangular grid of points, 2010

Seppo Mustonen, On lines going through a given number of points in a rectangular grid of points, 2010 [Local copy]

Crossrefs

Cf. A333282, A333283, A333284.

Sequence in context: A092649 A179923 A190628 * A209671 A173796 A352122

Adjacent sequences: A333282 A333283 A333284 * A333286 A333287 A333288

Keyword

nonn

Author

Scott R. Shannon and N. J. A. Sloane, Mar 16 2020

Status

approved