Number of (n+2) X (2+2) 0..1 arrays with every 2 X 2 and 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.

A253504

Number of (n+2) X (2+2) 0..1 arrays with every 2 X 2 and 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.

Terms

    a(0) =260a(1) =472a(2) =784a(3) =1196a(4) =1712a(5) =2340a(6) =3088a(7) =3964a(8) =4976a(9) =6132a(10) =7440a(11) =8908a(12) =10544a(13) =12356a(14) =14352a(15) =16540a(16) =18928a(17) =21524a(18) =24336a(19) =27372a(20) =30640a(21) =34148a(22) =37904a(23) =41916a(24) =46192a(25) =50740a(26) =55568a(27) =60684a(28) =66096a(29) =71812

External references