17999

Appears in sequences

• Fibonacci sequence beginning 2, 17.at n=16A022118
• Number of matchings in the wheel graph with n spokes.at n=15A061705
• a(n) = floor(X/Y) where X = concatenation in decreasing order of (2n)-th even number to (n+1)-th even number and Y = that of first n even numbers in increasing order.at n=10A067092
• a(n) = smallest k such that 5k has a digit sum = n.at n=39A077492
• Numbers k such that F(2*k + 1) is prime where F(m) is a Fibonacci number.at n=28A117517
• Minimum number k for which the digital sum of k*n is 8*n.at n=5A147828
• a(n) = 900*n - 1.at n=19A158409
• a(n) = 20*n^2 - 1.at n=29A158491
• a(n) = 80*n^2 - 1.at n=14A158774
• Square excess of Fibonacci numbers.at n=46A190993
• Numbers n such that n!8 + 2 is prime.at n=49A204663
• Smallest distance of the n-th Fibonacci number to the set of all square integers.at n=46A243256
• Values of a^3 + b^3 such that the equation a^3 + b^3 = x^2 + y^2 + z^2 is not soluble where a, b > 0 and x, y, z >= 0.at n=42A272174
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 617", based on the 5-celled von Neumann neighborhood.at n=24A273248
• a(n) = (Sum_{i=1..n-1} i^(n-2)) mod n^3.at n=29A284759
• Expansion of x*(1 + 2*x*(5 - 4*x)*(1 + x^2)*(1 + x^4))/((1 - x)*(1 - 10*x^9)).at n=35A302556
• a(n) is the smallest positive number m not yet in the sequence with the property that the sum of the even digits of m and the sum of the odd digits of m differ by n.at n=35A341011
• A list of lists where T(n,k) is the smallest n-digit number whose digits have arithmetic mean k, for 1 <= k <= 9.at n=42A362038
• a(n) = Sum_{k=0..n} binomial(n,k) * binomial(4*n+2*k,k).at n=4A387427