129648

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 15.at n=26A031693
• 1/3 of product of three numbers: the n-th prime, the previous number and the following number.at n=20A127919
• a(n) = 225n^2 + 2n.at n=23A158228
• Triangle read by rows: T(n,k) is the number of 2-compositions of n having least entry equal to k (n >= 1; 0 <= k <= floor(n/2)).at n=29A181365
• Number of 2-compositions of n containing at least one 0 entry. A 2-composition of n is a nonnegative matrix with two rows, such that each column has at least one nonzero entry and whose entries sum up to n.at n=9A181367
• Number of length n+1 0..5 arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=5A250164
• T(n,k)=Number of length n+1 0..k arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=50A250167
• Number of length 6+1 0..n arrays with the sum of adjacent differences multiplied by some arrangement of +-1 equal to zero.at n=4A250171
• Starts of runs of 3 consecutive lazy-tribonacci-Niven numbers (A352107).at n=11A352109