202950

Appears in sequences

• Fibonacci sequence beginning 0, 30.at n=20A022364
• Triangle read by rows: T(n,k) is the number of set partitions of the set {1,2,...,n} containing k blocks of size 2 (0 <= k <= floor(n/2)).at n=38A124498
• Sum of positive even numbers up to n^2.at n=29A235367
• Number of (n+1) X (2+1) 0..1 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=9A250791
• Oblong composite numbers m such that beta(m) = tau(m)/2 - 1 where beta(m) is the number of Brazilian representations of m and tau(m) is the number of divisors of m.at n=25A326384
• Number of even-length compositions of n with alternating parts distinct.at n=24A342532
• Expansion of e.g.f. (1 + x)^(x^4/24).at n=11A355603