49864

Appears in sequences

• Least k such that the first k terms of the Kolakoski sequence (A000002) contain n more 2's than 1's.at n=31A025503
• a(n) = Sum_{k=0..n} (n-k+1)^k.at n=10A026898
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 27 ones.at n=29A031795
• Triangle, read by rows, where T(n,k) = Sum_{j=0..n-k-1} C(j+k,j)*T(n-1,j+k) for n>k>=0 with T(n,n)=1.at n=66A101494
• First row of spectral array W(3^(1/3)).at n=18A249179
• Position of first appearance of each integer in A088568 (number of 1's minus number of 2's in first n terms of A000002).at n=43A288605
• a(n) = index where A088568 (or equally A294448) first reaches or exceeds n in magnitude.at n=31A294449
• a(n) = n*((2*n + 1)*(2*n^2 + 2*n + 3) - 3*(-1)^n)/24.at n=23A325517
• Number of n-th generation nodes of a rooted binary tree whose m-th node has exactly A000002(m) descendants, where A000002 is the Kolakoski sequence.at n=27A329758