27830

Appears in sequences

• Theta series of A*_10 lattice.at n=36A023922
• Numbers having four 6's in base 8.at n=14A043448
• a(n) = Sum_{k=1..n, gcd(n,k) = 1} k^3.at n=21A053819
• "Stapled" intervals are defined in A090318. Call a stapled interval "minimal" if it does not contain any proper stapled subinterval. Sequence gives starting points of minimal stapled intervals.at n=1A130171
• Starting points of stapled intervals.at n=3A130173
• G.f. satisfies: A(x) = x/(1 - A(x+x^2)).at n=8A140046
• Triangle T(n,k) read by rows: T(n,1) = T(n,n)=1, otherwise T(n,k) = (3n-3k+1)*T(n-1,k-1) + k*(3k-2)*T(n-1,k), 1<=k<=n.at n=18A166962
• Starting points of stapled intervals of length 17.at n=1A194585
• Coefficients of the twisted K3 elliptic genus attached to the conjugacy class 1A in the Mathieu group M_24.at n=6A212301
• a(n) = Sum_{1 <= j <= n/2, gcd(j,n)=1} j^3.at n=43A295575
• Number of separable partitions of n that consist of an odd number of parts.at n=43A325724
• a(n) is the largest number that can be expressed as the sum of three triangular numbers in exactly n ways.at n=16A330810
• Row sums of A342000.at n=18A342020
• a(n) is the number of n-celled fixed rounded polyominoes.at n=6A362223