Number of lower triangles of a 4X4 0..n array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less.
A195250
Number of lower triangles of a 4X4 0..n array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by two or less.
Terms
- a(0) =1024a(1) =59049a(2) =190514a(3) =357847a(4) =533142a(5) =709613a(6) =886084a(7) =1062555a(8) =1239026a(9) =1415497a(10) =1591968a(11) =1768439a(12) =1944910a(13) =2121381a(14) =2297852a(15) =2474323a(16) =2650794a(17) =2827265a(18) =3003736a(19) =3180207a(20) =3356678a(21) =3533149a(22) =3709620a(23) =3886091a(24) =4062562a(25) =4239033a(26) =4415504a(27) =4591975
External references
- oeis: A195250