84906

Appears in sequences

• Numerators of continued fraction convergents to sqrt(997).at n=12A042930
• Take pairs (a, b), sorted on a, such that T(a)+T(b)=concatenation of a and b, where T(k) is the k-th triangular number A000217(k). Sequence gives values of b.at n=35A096032
• Take pairs (a, b), sorted on a, such that T(a)+T(b)=concatenation of a and b, where T(k) is the k-th triangular number A000217(k). Sequence gives values of b.at n=40A096032
• Number of (w,x,y,z) with all terms in {1,...,n} and 3w>=x+y+z+n.at n=26A212250
• Numbers n such that n^2 + 1, (n+1)^2 + 1 and (n+2)^2 + 1 are divisible by a square.at n=14A218048
• Numbers n such that n^2 + 1 has two distinct prime divisors less than n.at n=36A263876