31428

Appears in sequences

• Lonely numbers: distance to closest prime sets a new record.at n=18A051650
• Smallest number at distance n from nearest prime.at n=31A051652
• Smallest number at distance 2n+1 from nearest prime.at n=15A051729
• a(n) is the smallest number for which the prime distance A051699 is equal to n.at n=31A077019
• Least positive k such that the distance from k to closest prime = n.at n=31A079582
• Determinants of 3 X 3 matrices of discrete blocks of 9 consecutive primes.at n=16A117329
• Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 13 ones in any 5 X 5 X 5 subtriangle.at n=9A154000
• a(n) = 97*n^2.at n=18A174338
• Number of nX4 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it.at n=6A183316
• Number of n X 7 binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it.at n=3A183319
• T(n,k) is the number of n X k binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it.at n=48A183322
• T(n,k) is the number of n X k binary arrays with an element zero only if there are an even number of ones to its left and an even number of ones above it.at n=51A183322
• Lonely numbers (A051650) which start a run of consecutive lonely numbers with difference 1.at n=3A233545
• Numbers such that the largest prime factor equals the sum of the 4th power of the other prime factors.at n=18A244344
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 414", based on the 5-celled von Neumann neighborhood.at n=42A272014
• Like 4-white numbers but with blocks of 4 starting at left.at n=15A277397
• Expansion of Product_{n>=1} (1 + (9*x)^n)^(1/3).at n=5A303074
• List of indices where the maximum of {A316190(j) | j<=n} increases.at n=16A316191
• Number of integer partitions of n - 1 containing fewer 1's than any other part.at n=51A364159
• Terms of A319928 that are congruent to 4 modulo 8: Numbers k == 4 (mod 8) such that there is no other m such that (Z/mZ)* is isomorphic to (Z/kZ)*, where (Z/kZ)* is the multiplicative group of integers modulo k.at n=27A372755