Number of nX4 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
A200773
Number of nX4 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
Terms
- a(0) =7a(1) =20a(2) =31a(3) =342a(4) =1368a(5) =1806a(6) =18801a(7) =66784a(8) =80772a(9) =855668a(10) =3041384a(11) =3594128a(12) =37388832a(13) =130414591a(14) =152057520a(15) =1585602417a(16) =5503438740a(17) =6353866245a(18) =65731117389a(19) =226849040721a(20) =260912168378
External references
- oeis: A200773