31457

Appears in sequences

• In binary representation: least number, k, which occurs n times in its factorial.at n=25A093826
• The first 10 digits of the cube root of n contain the digits 0-9.at n=8A119517
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0110-0110-1111 pattern in any orientation.at n=18A147357
• Number of permutations of {1,...,n} avoiding adjacent step pattern up, down, up, down, up.at n=8A177529
• Numbers k for which there are no prime numbers in the range (k-4*sqrt(sqrt(k)), k].at n=21A192320
• Least k such that k*30^n-1 , k*30^n+1, and 2*k*30^n-1 are prime; that is, twin primes and a Sophie Germain prime.at n=40A212956
• Row lengths in A261644.at n=18A261646
• Number of multisets of nonempty sets of nonempty sets of positive integers with total sum n.at n=16A330456
• Numbers k such that w(k-2), w(k-1), and w(k) are all odd, where w is A336957.at n=11A338070
• Difference between upper and lower member of a pair of adjacent perfect powers A340700 and A340701, both with exponents > 2.at n=27A340706