Number of (1+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal.
A232590
Number of (1+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal.
Terms
- a(0) =0a(1) =10a(2) =2a(3) =26a(4) =20a(5) =70a(6) =90a(7) =210a(8) =336a(9) =674a(10) =1178a(11) =2234a(12) =4036a(13) =7502a(14) =13714a(15) =25314a(16) =46464a(17) =85562a(18) =157266a(19) =289370a(20) =532116a(21) =978838a(22) =1800234a(23) =3311282a(24) =6090256a(25) =11201874a(26) =20603306a(27) =37895546a(28) =69700612a(29) =128199582
External references
- oeis: A232590