Half the number of lower triangles of a 4 X 4 0..n array with no element equal to the average of its horizontal and vertical neighbors.
A194617
Half the number of lower triangles of a 4 X 4 0..n array with no element equal to the average of its horizontal and vertical neighbors.
Terms
- a(0) =47a(1) =4322a(2) =132214a(3) =1674043a(4) =12561823a(5) =66369488a(6) =279618492a(7) =975189851a(8) =2972844263a(9) =8086809479a(10) =20111108169a(11) =46277171169a(12) =100029289052a(13) =204344500677a(14) =398372414831a(15) =744412292078
External references
- oeis: A194617