27280

Appears in sequences

• a(n) = floor(n*phi^15), where phi is the golden ratio, A001622.at n=20A004930
• a(n) = round(n*phi^15), where phi is the golden ratio, A001622.at n=20A004950
• a(n) = binomial(2*n,n) mod ((n+1)*(n+2)*(n+3)).at n=29A065345
• G.f.: -x*(1-2*x+2*x^2)/(2*x^3-4*x^2+4*x-1).at n=11A078484
• Row sums of triangle A134480.at n=31A134481
• Number of (n+1) X (1+1) 0..2 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=4A237377
• Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=0A237381
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=10A237384
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=14A237384
• Number of binary strings of length 2n that contain the ones' complements and the reversals of each of their two halves.at n=21A237502
• Smallest number with middle divisors whose distance to the next number with middle divisors is n.at n=19A280295
• Numbers whose numerator and denominator of their abundancy index are both Fibonacci numbers.at n=21A349687