51668

Appears in sequences

• Values of Recamán's sequence A005132 at start of n-th segment (see A064492).at n=16A065038
• A subdiagonal of number array A083064.at n=5A083072
• a(n) = n^5-n^4-n^3-n^2-n-1.at n=9A125083
• a(2*n) = 3*a(2*n-1), a(2*n+1) = 3*a(2*n) - 1, with a(1) = 1.at n=10A153774
• a(n) = (7*9^n + 1)/8.at n=5A187709
• Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,2 for x=0,1,2,3,4.at n=7A198008
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,0,1,2 for x=0,1,2,3,4.at n=47A198013
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,3,0,1,2 for x=0,1,2,3,4.at n=52A198013
• Sum of squares of parts of the partitions of 2n into two squarefree parts.at n=36A280316