The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A274066 Number of nX2 0..2 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..2 order. 0
 2, 9, 50, 285, 1129, 4791, 17219, 63640, 182143, 598332, 1622713, 4807733, 12097755, 34041279, 81727927, 221397591, 519077550, 1343959858, 3089610203, 7776466084, 17320256047, 42922087359, 94826300116, 228462204560 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A274068. LINKS EXAMPLE Some solutions for n=5 ..0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1. .0..1 ..1..2. .1..2. .1..0. .0..1. .0..2. .0..2. .2..0. .2..2. .0..1. .2..0 ..1..2. .0..2. .2..2. .0..2. .1..2. .2..0. .2..1. .1..0. .0..2. .2..1 ..1..0. .2..1. .0..1. .2..0. .1..0. .1..1. .2..0. .2..0. .2..0. .0..0 ..1..2. .0..0. .0..2. .1..0. .2..2. .2..0. .1..2. .1..0. .2..1. .1..2 CROSSREFS Cf. A274068. Sequence in context: A262752 A138416 A328741 * A055997 A115599 A047069 Adjacent sequences:  A274063 A274064 A274065 * A274067 A274068 A274069 KEYWORD nonn AUTHOR R. H. Hardin, Jun 09 2016 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 21 19:57 EDT 2020. Contains 337273 sequences. (Running on oeis4.)