152567

Properties

Appears in sequences

• Smallest sets of 6 consecutive deficient numbers in arithmetic progression. The initial deficient number is listed.at n=26A231628
• a(n) is the least integer k such that 1/(Sum_{j=1..n} 1/phi(k*j)) is an integer.at n=34A341810
• a(n) is the least integer k such that n/(Sum_{j=1..n} 1/phi(k*j)) is an integer.at n=34A341813
• Number of integer compositions of n that are the first sums of some composition with all parts > 1.at n=49A391235
• Prime numbersat n=14072