-4617

Appears in sequences

• Hankel transform of number of divisors sequence (A000005).at n=29A056225
• a(1)=a(2)=a(3)=1; a(n)=|a(n-2)+a(n-3)|-2*a(n-1).at n=15A080206
• Triangular sequence produced from symmetrical power of two matrices of the general type: M={{1, 2, 4, 8}, {2, 1, 2, 4}, {4, 2, 1, 2}, {8, 4, 2, 1}}.at n=23A129964
• Values of n such that L(13) and N(13) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=50A227516
• G.f. A(x) satisfies: A( x*A(x)^2 - x^2*A(x) ) = x^4.at n=10A291614