Number of (n+1) X (1+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.

A251130

Number of (n+1) X (1+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) =40a(1) =133a(2) =369a(3) =919a(4) =2129a(5) =4699a(6) =10033a(7) =20947a(8) =43077a(9) =87703a(10) =177389a(11) =357271a(12) =717625a(13) =1439011a(14) =2882553a(15) =5770507a(16) =11547389a(17) =23102239a(18) =46213141a(19) =92436271a(20) =184883985a(21) =369781003a(22) =739576769a(23) =1479170179a(24) =2958359029a(25) =5916738919a(26) =11833501053

External references