29053

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and w+y=|x-y|+|y-z|.at n=38A212677
• a(n) = a(n-1) + a(n-2) + 2 a([(n-1)/2]), where a(0) = 1, a(1) = 2, a(2) = 3.at n=18A298355
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero.at n=9A303796
• Number of integer partitions of n whose distinct parts have non-integer median.at n=44A360689
• Squarefree semiprimes k such that k+1 is the product of three distinct primes and k+2 is the product of four distinct primes.at n=45A376352
• Triangle read by rows: T(n,k) = number of collections of up to k+1 disjoint subsets of [n] covering [n], with [0]={}, 0<=k<=n.at n=49A381682