Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2.
A276293
Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-1) and new values introduced in order 0..2.
Terms
- a(0) =1a(1) =4a(2) =11a(3) =31a(4) =88a(5) =250a(6) =710a(7) =2016a(8) =5724a(9) =16252a(10) =46144a(11) =131016a(12) =371992a(13) =1056192a(14) =2998832a(15) =8514544a(16) =24175232a(17) =68640416a(18) =194889824a(19) =553348096a(20) =1571113920a(21) =4460842944a(22) =12665612288a(23) =35961305216a(24) =102104457600a(25) =289903834112
External references
- oeis: A276293