Number of 3 X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.
A232337
Number of 3 X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.
Terms
- a(0) =1a(1) =16a(2) =74a(3) =154a(4) =628a(5) =1470a(6) =5530a(7) =13906a(8) =49150a(9) =130108a(10) =439834a(11) =1208138a(12) =3956136a(13) =11159566a(14) =35718398a(15) =102702256a(16) =323381538a(17) =942724706a(18) =2933702600a(19) =8637532046a(20) =26653534886a(21) =79035941608a(22) =242412919890a(23) =722524675274
External references
- oeis: A232337