Number of (n+2)X(2+2) 0..1 arrays with nondecreasing sum of every three consecutive values in every row and column.
A251188
Number of (n+2)X(2+2) 0..1 arrays with nondecreasing sum of every three consecutive values in every row and column.
Terms
- a(0) =1728a(1) =7776a(2) =34992a(3) =157464a(4) =466560a(5) =1382400a(6) =4096000a(7) =9600000a(8) =22500000a(9) =52734375a(10) =106312500a(11) =214326000a(12) =432081216a(13) =784147392a(14) =1423082304a(15) =2582630848a(16) =4337012736a(17) =7283146752a(18) =12230590464a(19) =19349176320a(20) =30611001600a(21) =48427561125
External references
- oeis: A251188