49860

Appears in sequences

• Least k such that first k terms of A022303 contain n more 2's than 1's.at n=31A025518
• Numbers k whose decimal representation, read as a base-12 value and divided by k, yields an integer.at n=29A032555
• Triangle T(n,k) of k-block ordered bicoverings of an unlabeled n-set, n >= 2, k = 3..n+floor(n/2).at n=22A060092
• Number of 6-block ordered bicoverings of an unlabeled n-set.at n=7A060094
• Triangle read by rows: T(n,k) is the number of alternating max-precedes-min permutations on [n+2] with 1 in position k+2, 0<=k<=n.at n=52A104346
• Recursive triangular symmetrical sequence: A(n,k) := (n - k + 1)A(n - 1, k - 1) + (k)* A(n - 1, k) - (n + 1)*A(n - 2, k - 1).at n=40A153479
• Number of idempotent 4 X 4 0..n matrices of rank 1.at n=15A224526
• Number of (n+1) X (n+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock.at n=7A235946
• Number of rooted identity trees with n nodes and 10-colored non-root nodes.at n=5A255522
• Scaled g.f. T(v) = Sum_{n>=0} a(n)*(3*v/64)^n satisfies 9*(5*v-4)*T + d/dv(16*v*(v-1)*(3*v-4)*T') = 0, and a(0)=1; sequence gives a(n).at n=4A318245