-1625

Appears in sequences

• Expansion of ((1+x)^3 - x^3)/((1+x)^5 - x^5).at n=12A105369
• Numerator of Hermite(n, 13/14).at n=3A159512
• a(n) = 5*a(n-1) - 10*a(n-2), with a(0)=0, a(1)=1.at n=7A190971
• G.f.: exp( Sum_{n>=1} A002129(n^2)*x^n/n ), where A002129(n) is the excess of sum of odd divisors of n over sum of even divisors of n.at n=29A225925
• 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=18A227516
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 219", based on the 5-celled von Neumann neighborhood.at n=23A270933
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 459", based on the 5-celled von Neumann neighborhood.at n=31A272290
• a(n) = Sum_{k >= 0}(-1)^k*binomial(n,5*k+1).at n=13A289321
• a(n) = Sum_{k>=0} (-1)^k*binomial(n, 5*k+2).at n=13A289387