126224

Appears in sequences

• Series for second parallel moment of square lattice (eventually changes sign).at n=12A006733
• Indices of highly composite triangular numbers.at n=29A101755
• a(n) is the smallest positive integer such that d(a(n))*d(a(n)+1) > d(a(n-1))*d(a(n-1)+1), where d(m) is the number of divisors of m and n > 1; a(1) = 1.at n=30A123000
• a(n) = Sum_{0<j<k<=n} k^3-j^3.at n=13A206809
• Number of nX4 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=14A300368
• Numbers k such that both k and k+1 are Zumkeller numbers (A083207).at n=35A328327
• Numbers m such that min(d(m), d(m+1)) > min(d(k), d(k+1)) for all k < m, where d(m) is the number of divisors of m (A000005).at n=14A333053
• a(n) is the least number k such that A048105(k) = A048105(k+1) = 2*n, and 0 if it does not exist.at n=16A344315
• Numbers k such that k and k+1 are both in A357605.at n=2A357608