2790864

Appears in sequences

• Eighth diagonal (m=7) of triangle A084938; a(n) = A084938(n+7,n) = (n^7 + 63*n^6 + 1855*n^5 + 34125*n^4 + 438424*n^3 + 3980172*n^2 + 20946960*n)/5040.at n=18A090393
• Number of nX2 array permutations with each element moved and moved by a city block distance of no more than three.at n=5A188963
• T(n,k)=Number of nXk array permutations with each element moved and moved by a city block distance of no more than three.at n=22A188966
• T(n,k)=Number of nXk array permutations with each element moved and moved by a city block distance of no more than three.at n=26A188966