32268
domain: N
Appears in sequences
- Triangle with entry a(n,m) giving the number of necklaces of n beads (C_N symmetry) with n colors available for each bead, but only m distinct fixed colors, say c[1],...,c[m], are present, with m from {1,...,n} and n>=1.at n=49A213934
- Sum of squared distances from origin to ends of all n-step spiral self-avoiding walks on simple cubic lattice.at n=6A260344
- Length of n-th iterate of the mapping 00->0010, 01->001, 10->011, starting with 00.at n=24A289010
- a(0)=a(1)=0; thereafter a(n) = A162973(n)/(n-1).at n=9A298012
- Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.at n=10A299183