18709
domain: N
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 35.at n=32A020374
- Numbers in ascending order formed by using all the digits of the next n numbers.at n=23A081991
- Triangle T(n,k) read by rows: Sum_{k=0..binomial(n,2)} T(n,k)*q^k = n!*Sum_{pi} faq(n,q)/Product_{i=1..n} e(i)!*faq(i,q)^e(i), where pi runs over all nonnegative integer solutions to e(1) + 2*e(2) + ... + n*e(n) = n and faq(i,q) = Product_{j=1..i} (q^j-1)/(q-1), i = 1..n.at n=30A152474
- Averages of four consecutive cubes.at n=26A173965
- Number of numbers in row n of the array at A243928.at n=25A243930
- Triangle read by rows: T(n,k) is the number of rooted ordered trees with node weights summing to n, where the root has weight 0, all internal nodes have weight 1, and leaf nodes have weights in {1,...,k}.at n=49A384685