-961

Appears in sequences

• Expansion of (1-2x-5x^2-7x^3+x^6)/((1-x)(1-x^3)^2).at n=37A141352
• Convolution of A006352 and A010815.at n=40A143278
• Numerator of Euler(n, 2/5).at n=5A156185
• Perfect powers (m^k where m is an integer and k >= 2) multiplied by -1 when m is prime for largest k (m^k thus a prime power).at n=39A157985
• Expansion of Product_{k>=1} (1 + x^(4*k))/(1 + x^k).at n=55A261734
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 5", based on the 5-celled von Neumann neighborhood.at n=15A270009
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 7", based on the 5-celled von Neumann neighborhood.at n=15A270013
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 73", based on the 5-celled von Neumann neighborhood.at n=15A270090
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 89", based on the 5-celled von Neumann neighborhood.at n=15A270132
• Numerator of 3F2([3*n, -n, n+1],[2*n+1, n+1/2], 1).at n=49A277170
• Hankel transform of A033434.at n=44A283439
• Dirichlet g.f.: 1 / zeta(s-2).at n=30A334657
• a(1) = 1, a(2) = -5; a(n) = -n^2 * Sum_{d|n, d < n} a(d) / d^2.at n=30A359485
• a(1) = 1, a(2) = 3; a(n) = n^2 * Sum_{d|n, d < n} (-1)^(n/d) a(d) / d^2.at n=30A361986
• a(1) = 1; a(n) = n^2 * Sum_{d|n, d < n} (-1)^(n/d) a(d) / d^2.at n=30A361987