Number of (n+1)X3 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
A184074
Number of (n+1)X3 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.
Terms
- a(0) =58a(1) =74a(2) =239a(3) =578a(4) =1599a(5) =4233a(6) =11128a(7) =28248a(8) =67622a(9) =152873a(10) =327044a(11) =665356a(12) =1293389a(13) =2411872a(14) =4330976a(15) =7515107a(16) =12640705a(17) =20668977a(18) =32935784a(19) =51260994a(20) =78079741a(21) =116598158a(22) =170976280a(23) =246540941a(24) =350031617a(25) =489882295a(26) =676542576a(27) =922841348
External references
- oeis: A184074