Number of n X 3 1..3 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.
A166782
Number of n X 3 1..3 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.
Terms
- a(0) =6a(1) =90a(2) =454a(3) =1541a(4) =4186a(5) =9808a(6) =20646a(7) =40039a(8) =72750a(9) =125334a(10) =206550a(11) =327817a(12) =503714a(13) =752524a(14) =1096822a(15) =1564107a(16) =2187478a(17) =3006354a(18) =4067238a(19) =5424525a(20) =7141354a(21) =9290504
External references
- oeis: A166782