24765

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VET = VPI-8 [Si17O34] starting with a T2 atom.at n=13A019248
• Generalized Pellian with second term equal to 10.at n=10A048697
• Trajectory of 22 under the Reverse and Add! operation carried out in base 2.at n=19A061561
• Numerators of convergents of the continued fraction with the n+1 partial quotients: [2;2,2,...(n 2's)...,2,n+1], starting with [1], [2;2], [2;2,3], [2;2,2,4], ...at n=9A088210
• a(n+1)-+a(n)=prime, a(n+1)*a(n)=Average of twin prime pairs, a(1)=1,a(2)=4.at n=30A154493
• Trajectory of 26 under the Reverse and Add! operation carried out in base 2.at n=17A213012
• 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=27A307108
• Numbers x that are equal to lpf(x)*gpf(x)*(lpf(x)+gpf(x))/2, where lpf(x) and gpf(x) are the least and the greatest prime factors of x: A020639 and A006530.at n=37A307117
• Numbers k such that k and k+1 are the product of exactly four distinct primes.at n=22A318896