Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 4 and every element equal to at least one neighbor.

A146092

Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 4 and every element equal to at least one neighbor.

Terms

    a(0) =1a(1) =235a(2) =1894a(3) =5928a(4) =14762a(5) =31448a(6) =59802a(7) =104420a(8) =170678a(9) =264732a(10) =393518a(11) =564752a(12) =786930a(13) =1069328a(14) =1422002a(15) =1855788a(16) =2382302a(17) =3013940a(18) =3763878a(19) =4646072a(20) =5675258a(21) =6866952a(22) =8237450a(23) =9803828a(24) =11583942a(25) =13596428a(26) =15860702

External references