52812
domain: N
Appears in sequences
- Gromov-Witten invariants of intersection type (3,3).at n=1A090005
- Square table, read by antidiagonals, where T(n,k) equals the number of k-tournament sequences of length n for k>=1, with T(0,k) = 1 for k>=1 and T(n,1) = 0 for n>0.at n=31A113080
- Square table T, read by antidiagonals, where T(n,k) gives the number of n-th generation descendents of a node labeled (k) in the tree of 4-tournament sequences.at n=31A113092
- Triangle T, read by rows, equal to the matrix cube of triangle A113095, which satisfies the recurrence: A113095(n,k) = [A113095^4](n-1,k-1) + [A113095^4](n-1,k).at n=10A113099
- Number of 4-tournament sequences: a(n) gives the number of increasing sequences of n positive integers (t_1,t_2,...,t_n) such that t_1 = 3 and t_i = 3 (mod 3) and t_{i+1} <= 4*t_i for 1<i<n.at n=4A113100
- A127790(n)/2.at n=18A127811
- Number of 5-step S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=29A187379
- Number of (n+1) X 2 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.at n=5A206087
- Number of (n+1) X 7 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.at n=0A206092
- T(n,k) = number of (n+1) X (k+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.at n=15A206094
- T(n,k) = number of (n+1) X (k+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.at n=20A206094
- Number of nonnegative integers with the property that their base 9/4 expansion (see A024652) has n digits.at n=11A245425
- Irregular triangle read by rows: T(n,k) = A344031(n,k)/2, n >= 1, 0 <= k <= 2*n-2.at n=32A344059
- a(n) = prime(n)*(prime(n-1) + prime(n+1)).at n=36A357679
- Terms of A319928 that are congruent to 4 modulo 8: Numbers k == 4 (mod 8) such that there is no other m such that (Z/mZ)* is isomorphic to (Z/kZ)*, where (Z/kZ)* is the multiplicative group of integers modulo k.at n=39A372755