31898

Appears in sequences

• Numbers k that divide A039916(k).at n=11A065965
• First of triples of consecutive happy numbers, i.e., the first of three consecutive integers each of which is a happy number (A007770).at n=30A072494
• a(n) = 25*n^2 - 14*n + 2.at n=36A154357
• Beach-Williams Pell numbers of type 2pq (p,q primes).at n=7A212075
• Triangular array read by rows: row n shows the coefficients of the polynomial u(n) = c(0) + c(1)*x + ... + c(n)*x^(n) which is the denominator of the n-th convergent of the continued fraction [k, k, k, ... ], where k = (x + 1)/(x + 2).at n=46A231775
• Number of nX6 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.at n=2A284073
• T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.at n=30A284075
• Number of 3Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.at n=5A284077
• Row sums of Sheffer triangle S2[3,2] given by A225466.at n=5A284864