33078

Appears in sequences

• a(n) = n*(n+1)*(4*n+5)/6.at n=36A016061
• Row sums of triangle A120072 (numerator triangle for H atom spectrum).at n=35A120074
• Row sums of triangle A144825.at n=36A144826
• The sum of the elements within a jump in a Sieve of Eratosthenes table.at n=34A179545
• Number of 4-tuples (w,x,y,z) with all terms in {1,...,n} and w*x>2*y*z.at n=18A211797
• G.f.: (2*x^2+4*x+3)/((2*x+2)*sqrt(-4*x^3-4*x^2+1))-1/(2*x+2).at n=14A247171
• Number of partitions of n such that the (sum of distinct odd parts) > n/2.at n=48A284614
• Number of partitions of n such that the (sum of distinct odd parts) >= n/2.at n=48A284615
• Number of minimal total dominating sets in the n-dipyramidal graph.at n=36A298823
• a(n) = Sum_{k=0..n} sigma(k^2 + 1), where sigma(k) is the sum of divisors of k (A000203).at n=41A333172
• Irregular triangle read by rows: T(n,k) is the number of unlabeled connected n-node graphs with intersection number (or edge clique cover number) k; n >= 1, 0 <= k <= floor(n^2/4).at n=64A355755