13631488

Appears in sequences

• a(n) = 13*2^n.at n=20A005029
• First differences of A045623.at n=22A045891
• Let x(1)=1, x(n+1) = (4/3)*x(n) - floor((4/3)*x(n)); then a(n)=x(n)*3^n.at n=14A073533
• a(n) is the number of occurrences of 11s in the palindromic compositions of m=2*n-1 = the number of occurrences of 12s in the palindromic compositions of m=2*n.at n=18A079863
• Inverse binary transform of A027656.at n=22A081037
• Numbers of isomers of unbranched a-4-catapolypentagons - see Brunvoll reference for precise definition.at n=23A121133
• Numbers of polypentagons with two connected internal vertices (see Cyvin et al. for precise definition).at n=23A122742
• Row sums of A146565.at n=24A259098
• Triangle for denominators of coefficients for integrated odd powers of cos(x) in terms sin((2*m+1)*x).at n=61A273172
• a(n) = nim-product of 2^3 and 2^n.at n=23A335160