36616

Appears in sequences

• Number of solutions of +- 1 +- 2 +- ... +- (n-1) +- n = 0 in which the partial sums +- 1 +- ... +- k (1<=k<=n) are all distinct.at n=32A015818
• G.f. = continued fraction: A(x)=1/(1-x^2-x/(1-x^2-x^2/(1-x^2-x^3/(1-x^2-x^4/(...))))).at n=14A088356
• Numbers n such that (n + prime(n)), (n+1 + prime(n+1)), (n+2 + prime(n+2)) and (n+3 + prime(n+3)) are divisible by 5.at n=22A107582
• G.f. satisfies: A(x) = A(x^2)^3 + x*A(x^2)^2.at n=33A195200
• Let K be a local ring with a principal maximal ideal J of nilpotent degree 4 with |K/J|>2; a(n) = number of D-invariant ideals in the ring R_n(K,J).at n=5A221704
• Number of partitions n such that the multiplicity of the number of odd parts is a part.at n=49A240541
• Number of 4Xn 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.at n=8A281059
• Numbers n such that both phi(n) and psi(n) are perfect squares.at n=41A291549