Number of nX2 0..2 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..2 order.
A274066
Number of nX2 0..2 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..2 order.
Terms
- a(0) =2a(1) =9a(2) =50a(3) =285a(4) =1129a(5) =4791a(6) =17219a(7) =63640a(8) =182143a(9) =598332a(10) =1622713a(11) =4807733a(12) =12097755a(13) =34041279a(14) =81727927a(15) =221397591a(16) =519077550a(17) =1343959858a(18) =3089610203a(19) =7776466084a(20) =17320256047a(21) =42922087359a(22) =94826300116a(23) =228462204560
External references
- oeis: A274066