19863

Appears in sequences

• a(n) = round(n*phi^16), where phi is the golden ratio, A001622.at n=9A004951
• a(n) = ceiling(n*phi^16), where phi is the golden ratio, A001622.at n=9A004971
• Number of partitions of n in which number of least parts is equal to least part.at n=46A096403
• Riordan array (1/(1-x*c(3*x)), x*c(3*x)/(1-x*c(3*x))), c(x) the g.f. of A000108.at n=22A110519
• Irregular array read by rows: A(n,k) = number of first coronas of a fixed rhombus r_{n,k} with characteristics of n-fold rotational symmetry in the Euclidean plane, n>=2, 1<=k<=floor(n/2), as explained below.at n=5A233332
• Signed recurrence over binary enriched p-trees: a(n) = (-1)^(n-1) + Sum_{x + y = n, 0 < x <= y < n} a(x) * a(y).at n=24A300865
• Number of non-isomorphic intersecting set-systems of weight n.at n=17A306006
• Numbers k such that k and 4k, taken together, contain all digits 1 though 9 at least once.at n=35A346135
• Number T(n,k) of partitions of [n] having exactly k parity changes within the partition, n>=0, 0<=k<=max(0,n-1), read by rows.at n=59A363519
• Number of subset-sums of strict integer partitions of n.at n=38A365925