219877

Appears in sequences

• Second diagonal of A027516.at n=13A027520
• G.f.: A(x) = x*cycle_index(S5, B(x)-1), where B(x) is g.f. for A000598.at n=20A036670
• Number of cyclic arrangements of S={1,2,...,n} such that the difference between any two neighbors is 2^k for some k=0,1,2,...at n=15A242519
• a(n) is the number of subsets of {1,2,...,n} with at least two elements and the difference between successive elements at least 6.at n=47A335184