Number of (n+1) X (3+1) 0..2 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
A251132
Number of (n+1) X (3+1) 0..2 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.
Terms
- a(0) =369a(1) =1002a(2) =1997a(3) =4110a(4) =8050a(5) =15830a(6) =30770a(7) =60088a(8) =117492a(9) =230956a(10) =455680a(11) =902602a(12) =1792830a(13) =3569098a(14) =7116086a(15) =14203652a(16) =28370704a(17) =56695536a(18) =113333908a(19) =226597798a(20) =453110314a(21) =906118110a(22) =1812113626a(23) =3624082160a(24) =7247993420a(25) =14495787220
External references
- oeis: A251132