41944

Appears in sequences

• Numerators of convergents to cube root of 5.at n=11A002358
• a(n) = n^2*(n+1)*(4*n^3 - 2*n^2 + n + 3)/12.at n=7A101380
• Isomers of polyenes attached to benzene (see Cyvin et al. for precise definition).at n=18A121094
• Let f(z) = z^2 + c, then row k lists the expansion of the n-fold composition f(f(...f(0)...)) in rising powers of c.at n=60A137560
• Triangle by rows, related to the numbers of binary trees of height less than n, derived from the Mandelbrot set.at n=40A202019
• Number of distinct sums of reciprocals of parts of partitions of n.at n=46A212187
• a(n) = Sum_{i=0..n} digsum_5(i)^4, where digsum_5(i) = A053824(i).at n=48A231671
• Number of walks of length 2n on the square lattice that start and end at (0,0) and avoid the negative quadrant.at n=5A260155
• Number of (binary) max-heaps on n elements from the set {0,1} containing exactly nine 0's.at n=22A326510
• Number of binary search trees (BST) on n nodes which have the same height as the optimal BST.at n=22A328349
• Number T(n,k) of binary search trees of height k having n internal nodes; triangle T(n,k), k>=0, k<=n<=2^k-1, read by columns.at n=38A335920
• Numbers k that divide the k-th Franel number.at n=27A372940