40807

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 19 ones.at n=35A031787
• Number of connected planar graphs with at most n edges.at n=12A176425
• Composite squarefree numbers n such that p(i)+7 divides n-7, where p(i) are the prime factors of n.at n=10A225717
• Products of three distinct primes that form an arithmetic progression.at n=32A262723
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 629", based on the 5-celled von Neumann neighborhood.at n=32A273297
• Numbers x that are equal to lpf(x)*gpf(x)*(lpf(x)+gpf(x))/2, where lpf(x) < gpf(x) are the least and the greatest prime factors of x: A020639 and A006530.at n=37A307108
• Heinz numbers of strict integer partitions with relatively prime parts in which no two parts are relatively prime.at n=2A318716
• MM-numbers of triangles.at n=1A322552
• Heinz numbers of integer partitions with no two distinct parts relatively prime, but with no divisor in common to all of the parts.at n=17A328679
• Heinz numbers of integer partitions with no two (not necessarily distinct) parts relatively prime, but with no divisor in common to all of the parts.at n=1A328868