30837

Appears in sequences

• Whitney number of level n of the lattice of the ideals of the crown of size 2 n.at n=13A051292
• If p(k) is the k-th prime, then the n-th set of 3 consecutive cousin prime pairs starts at p(a(n)).at n=38A095970
• Numerator of Euler(n, 3/22).at n=4A156873
• Number of nondecreasing integer sequences of length 23 with sum zero and sum of absolute values 2n.at n=14A158157
• Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.at n=5A293095
• T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.at n=33A293100
• Number of 6 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.at n=2A293105
• Numbers k such that k divides the sum of digits in factorial base of all numbers from 1 to k.at n=27A333702