Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,1,0,0 for x=0,1,2,3,4.
A197312
Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,1,1,0,0 for x=0,1,2,3,4.
Terms
- a(0) =2a(1) =3a(2) =5a(3) =10a(4) =128a(5) =79a(6) =249a(7) =662a(8) =2767a(9) =3969a(10) =14343a(11) =26565a(12) =85744a(13) =172877a(14) =540761a(15) =1086259a(16) =3216870a(17) =6970421a(18) =19943621a(19) =43866426a(20) =122208464a(21) =276719535a(22) =753092637a(23) =1739409216a(24) =4652758432a(25) =10905015671a(26) =28759884710a(27) =68307698666a(28) =178118628885
External references
- oeis: A197312