42906
domain: N
Appears in sequences
- Triangle T(n, k) read by rows; given by [0, 1, 0, 2, 0, 3, 0, 4, ...] DELTA [1, 0, 2, 0, 2, 0, 3, 0, 2, 0, 4, 0, 2, 0, ...] (A000005 interspersed with 0's) where DELTA is Deléham's operator defined in A084938.at n=51A085852
- Binomial transform of A101910, where A101910(n) = a(A000120(n-1)) for n>0 with A101910(0) = 1.at n=13A101911
- Number of nX6 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 nX6 array.at n=6A219517
- Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 7Xn array.at n=5A219524
- Triangle read by rows: T(n,k) is the number of weighted lattice paths B(n) having k uhd strings.at n=41A247290
- Number of nodes in graph BC(n,2) when the internal nodes are counted with multiplicity.at n=18A343994
- E.g.f. satisfies A(x) * log(A(x)) = 3 * (exp(x) - 1).at n=5A357245