Number of (n+2) X 3 0..2 arrays with every 2 X 2 subblock sum equal to some diagonal or antidiagonal neighbor 2 X 2 subblock sum.

A187280

Number of (n+2) X 3 0..2 arrays with every 2 X 2 subblock sum equal to some diagonal or antidiagonal neighbor 2 X 2 subblock sum.

Terms

    a(0) =711a(1) =859a(2) =20529a(3) =79499a(4) =868277a(5) =5031413a(6) =43307435a(7) =292250165a(8) =2308333343a(9) =16530790801a(10) =126385412189a(11) =927198993151

External references