37170

Appears in sequences

• Coordination sequence for 4-dimensional I-centered cubic orthogonal lattice.at n=21A008532
• a(n) = T(n,n-3), where T is the array in A026374.at n=39A026382
• Number of regions in regular n-gon which are quadrilaterals (4-gons) when all its diagonals are drawn.at n=38A067151
• G.f.: exp(x) = Product_{n>=1} [1 + a(2n-1)*x^(2n-1)/(2n-1)! + a(2n)*x^(2n)/(2n)! ].at n=10A137941
• Positive numbers m such that m^2 - 1 divides 4^m - 1.at n=24A271842
• T(n, k) is the total number of symmetric peaks in all partitions of n with exactly k blocks, n >= 3, 2 <= k <= n-1.at n=41A373288
• Primitive terms of A023197 that are of the form 4u+2.at n=25A388020
• Primitive terms of A388036.at n=38A388037