1861860

Appears in sequences

• Theta series of A*_14 lattice.at n=58A023926
• a(n) = Max { k>0 : denominator(S(k,2n+1)) } where S(k,s)=sum(i=1,k,i^s*H(i,2)) - H(k,2)*H(k,-s) and H(k,r)=sum(i=1,k,1/i^r) are the generalized harmonic numbers.at n=29A096442
• Numbers with prime factorization pqrstuv^2.at n=9A190381
• Average of twin prime pairs n having their decimal expansion of the form abcabc or abcabc0 such that n contains three twin primes as divisors.at n=13A235716
• Numbers that occur 5 or more times in the triangle of denominators in Leibniz's Harmonic Triangle.at n=4A273416
• a(n) = LCM(k*j_1!*...*j_k! : j_1,...,j_k>=1, j_1+...+j_k=n, k=1,...,n)/n!.at n=60A338025
• Numbers k such that A383546(k) > A383546(m) for all m < k.at n=19A383547