47920

Appears in sequences

• Coordination sequence for A_4 lattice.at n=16A008383
• Number of ordered 5-tuples of integers from [ 2,n ] with no common factors among quadruples.at n=21A015655
• Expansion of exp(2*x)*(1+x)/(1-x)^2.at n=6A082029
• Number of integer sequences of length n+1 with sum zero and sum of absolute values 32.at n=3A157065
• O.g.f.: exp( Sum_{n>=1} A067692(n)*x^n/n ), where A067692(n) = [sigma(n)^2 + sigma(n,2)]/2.at n=16A180608
• Number of nondecreasing arrangements of n numbers in -3..3 with sum zero and sum of squares not greater than n*12/3.at n=35A183921
• Number of nX6 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order.at n=4A240781
• T(n,k)=Number of nXk 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order.at n=49A240783
• Number of 5Xn 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order.at n=5A240786