Number of slanted n X 4 (i=1..n) X (j=i..4+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner.
A165373
Number of slanted n X 4 (i=1..n) X (j=i..4+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner.
Terms
- a(0) =37a(1) =305a(2) =1409a(3) =4569a(4) =11449a(5) =24225a(6) =45585a(7) =78729a(8) =127369a(9) =195729a(10) =288545a(11) =411065a(12) =569049a(13) =768769a(14) =1017009a(15) =1321065a(16) =1688745a(17) =2128369a(18) =2648769a(19) =3259289a(20) =3969785a(21) =4790625a(22) =5732689a(23) =6807369a(24) =8026569a(25) =9402705a(26) =10948705a(27) =12678009a(28) =14604569
External references
- oeis: A165373