30967

Appears in sequences

• Products of 2 successive primes.at n=39A006094
• Numbers whose set of base-13 digits is {1,3}.at n=32A032920
• Number of partitions satisfying cn(0,5) <= cn(1,5) + cn(4,5) + cn(2,5) + cn(3,5).at n=38A039849
• Integer part of n#/(p-7)#, where p=preceding prime to n.at n=37A102792
• Product of the n-th sexy prime pair.at n=23A111192
• Numbers n with the property that the difference between the two largest proper divisors of n equals the sum of proper divisors of the digit sum of n.at n=5A132783
• Numbers n such that exactly two positive d in the range d <= n/2 exist which divide binomial(n-d-1, d-1) and which are not coprime to n.at n=33A178098
• Product of adjacent primes with a gap of 6.at n=11A210477
• Number of intersections of diagonals in the interior and exterior of a regular n-gon.at n=23A211383
• Smallest k such that (10^n+k, 10^n+k+2) and (10^(n+1)+k, 10^(n+1)+k+2) are two pairs of twin primes.at n=9A224905
• Consider a number x. Take the sum of its digits. Repeat the process deleting the first addendum and adding the previous sum. The sequence lists the numbers that after some iterations reach the arithmetic derivative of x.at n=28A269312
• Sequence of pairwise relatively prime numbers of class P_3 (see comment).at n=20A275246
• a(n) is the sum of the lengths of all the segments used to draw a rectangle of height partition(n) and width n divided into partition(n) rectangles of unit height, in turn, divided into rectangles of unit height and lengths corresponding to the parts of the partitions of n.at n=21A338969
• Product of the prime numbers that are between 10*n and 10*(n+1).at n=17A356690
• Number of integer partitions of n that can be partitioned into sets with distinct sums.at n=42A381992