38800

Appears in sequences

• Theta series of A*_19 lattice.at n=76A023931
• Expansion of (theta_3(z)*theta_3(11z) + theta_2(z)*theta_2(11z))^4.at n=26A028612
• Numbers of isomers of unbranched a-4-catapolypentagons - see Brunvoll reference for precise definition.at n=9A121136
• a(n) = 4*(4 + 9*n^2 + 15*n).at n=32A144449
• a(n) = A061039(8*n+5).at n=24A144453
• Terms of A061039 that are multiple of 10, in the order in which they appear.at n=39A146762
• The fourth row of the ED1 array A167546.at n=17A167547
• a(n) = 97*n^2.at n=20A174338
• Number of n X 5 binary arrays without the pattern 0 1 diagonally or antidiagonally.at n=24A188820
• Number of distinct cardinalities of orbits of lattice points under the automorphism group of the n-dimensional integer lattice.at n=44A270950
• Relative of Hofstadter Q-sequence: a(n) = max(0, n+19395) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0.at n=37A283886
• Number of free mature snake polyominoes of n cells, where mature means that the snake cannot grow in either direction.at n=13A359521
• Array read by antidiagonals: T(n,k) is the number of nonisomorphic multisets of involutions on an n-set with k involutions.at n=72A362648
• Numbers k such that the powerful part of the sum of divisors of k (A387726) is greater than or equal to k, and sigma(k) is not itself a powerful number.at n=32A387729