27114

Appears in sequences

• Multiplicity of highest weight (or singular) vectors associated with character chi_122 of Monster module.at n=43A034510
• Expansion of Product_{k>=1} 1/(1 - 2*t^k).at n=13A070933
• Barely abundant numbers: abundant n such that sigma(n)/n < sigma(m)/m for all abundant numbers m<n, sigma(n) being the sum of the divisors of n.at n=22A071927
• Number of monocyclic skeletons with n carbon atoms and a ring size of 5.at n=11A120333
• a(0)=0; a(1)=1; a(n) = Sum_{k=1..[sqrt(n)]} a(n-k) for n>=2.at n=20A132915
• Partial sums of economical numbers A046759.at n=23A172460
• a(n) = sum(abs(stirling1(n,k))*stirling2(n+1,k+1)*k!,k=0..n).at n=5A192562
• a(n) = 27*n^2/2 + 45*n/2 - 12 (n>=1).at n=43A304375
• Triangle read by rows: T(n,k) = A(k,n-k), 1 <= k < n, 2 <= n, where A(m,n) is the number of distinct strings consisting of one X, 2*m Y's and 2*n Z's in which the X lies to the right of at least m Y's and at least n Z's.at n=29A351584
• Triangle read by rows: T(n,k) = A(k,n-k), 1 <= k < n, 2 <= n, where A(m,n) is the number of distinct strings consisting of one X, 2*m Y's and 2*n Z's in which the X lies to the right of at least m Y's and at least n Z's.at n=34A351584