Number of nX2 1..4 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.
A166777
Number of nX2 1..4 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.
Terms
- a(0) =0a(1) =12a(2) =116a(3) =487a(4) =1438a(5) =3472a(6) =7342a(7) =14119a(8) =25268a(9) =42732a(10) =69024a(11) =107327a(12) =161602a(13) =236704a(14) =338506a(15) =474031a(16) =651592a(17) =880940a(18) =1173420a(19) =1542135a(20) =2002118a(21) =2570512a(22) =3266758a(23) =4112791a(24) =5133244a(25) =6355660a(26) =7810712a(27) =9532431a(28) =11558442a(29) =13930208
External references
- oeis: A166777