19634

Appears in sequences

• Numbers k such that 175*2^k+1 is prime.at n=25A032464
• Lonely numbers: distance to closest prime sets a new record.at n=15A051650
• Smallest number at distance n from nearest prime.at n=25A051652
• Smallest number at distance 2n+1 from nearest prime.at n=12A051729
• a(1)=1, a(n) is the smallest integer > a(n-1) such that the sum of elements of the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals n*(n+1)/2 the n-th triangular number.at n=25A071184
• a(n) is the smallest number for which the prime distance A051699 is equal to n.at n=25A077019
• Least positive k such that the distance from k to closest prime = n.at n=25A079582
• a(n) = n*(n^2 - 1)/2 - 1.at n=32A117560
• Monotonic ordering of nonnegative differences 3^i-7^j, for 40>= i>=0, j>=0.at n=27A192153
• Last occurrence of n partitions in A205617.at n=40A205618
• Lonely numbers (A051650) which start a run of consecutive lonely numbers with difference 1.at n=2A233545
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 809", based on the 5-celled von Neumann neighborhood.at n=26A273612
• Expansion of Product_{k>=1} 1/(1+x^k)^(k^2) in powers of x.at n=19A284896
• Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 5 or 6 king-move adjacent elements, with upper left element zero.at n=6A304602
• Number of n X 7 0..1 arrays with every element unequal to 0, 1, 2, 5 or 6 king-move adjacent elements, with upper left element zero.at n=5A304603
• List of indices where the maximum of {A316190(j) | j<=n} increases.at n=13A316191