Number of n X 2 0..5 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
A201136
Number of n X 2 0..5 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
Terms
- a(0) =15a(1) =30a(2) =5a(3) =135a(4) =282a(5) =51a(6) =848a(7) =1189a(8) =120a(9) =2596a(10) =3978a(11) =473a(12) =7680a(13) =9594a(14) =836a(15) =16302a(16) =22017a(17) =2208a(18) =35248a(19) =41604a(20) =3380a(21) =62174a(22) =78404a(23) =7167a(24) =113125a(25) =129100a(26) =10067a(27) =178415a(28) =215500a(29) =18583
External references
- oeis: A201136