31424
domain: N
Appears in sequences
- Smallest number at distance n from nearest prime.at n=27A051652
- Smallest number at distance 2n+1 from nearest prime.at n=13A051729
- a(n) is the smallest number for which the prime distance A051699 is equal to n.at n=27A077019
- Least positive k such that the distance from k to closest prime = n.at n=27A079582
- Numbers n such that n, n+1, n+2, n+3, n+4 are all of the form x^2+2*y^2 for nonnegative x, y.at n=19A096783
- Smallest number at distance exactly 3n from nearest prime.at n=9A132470
- Smallest number at distance 3n from nearest prime (variant 2).at n=9A132861
- Number of permutations p of 1,2,...,n satisfying |p(i+2)-p(i)|<>3 and |p(j+3)-p(j)|<>2 for all i=1..n-2, j=1..n-3.at n=9A189565
- Expansion of phi(q^2)^2 / (phi(-q) * phi(q^4)) in powers of q where phi() is a Ramanujan theta function.at n=21A212318
- First differences of (provable) Sierpiński numbers (A076336).at n=20A270971
- Consecutive internal states of the linear congruential pseudo-random number generator (421*s + 54773) mod 259200 when started at 1.at n=11A383129