536854528

Appears in sequences

• a(n) = 2^(n-1)*( 2^n + (-1)^n ).at n=15A003665
• a(n) = 2^(n-1)*(2^n - 1), n >= 0.at n=15A006516
• Dual pairs of integrals arising from reflection coefficients.at n=30A007179
• Number of Barlow packings with group P6(bar)m2 that repeat after 2n layers.at n=30A011949
• Number of reversible strings with n beads of 2 colors. If more than 1 bead, not palindromic.at n=29A032085
• a(n) = (nextprime(4^n) - nextprime(2^n))/2.at n=15A037131
• Sum of every 4th entry of row n in Pascal's triangle, starting at "n choose 1".at n=31A038504
• Sum of every 4th entry of row n in Pascal's triangle, starting at binomial(n,2).at n=31A038505
• Number of elements of GF(2^n) with trace 0 and subtrace 1.at n=31A038519
• Number of elements of GF(2^n) with trace 1 and subtrace 0.at n=31A038520
• a(n) = 2^(4n+1) - 2^(2n).at n=7A079598
• a(n) = A000225(n+3)-A052955(n).at n=26A086652
• 2^(n-1)J(n,1/2) where J(n,x)=n-th Jacobsthal polynomial.at n=29A109243
• Number of compositions of n with an even number of 1's.at n=31A113979
• G.f.: 1/((1-2*x)*(1-2*x^2)).at n=28A122746
• A006516 at positions with even indices, A007582 at positions with odd indices.at n=30A137173
• Numbers of the form 2^(n-1)*(2^n - 1) which aren't perfect numbers.at n=10A144858
• a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 16.at n=3A161139
• a(n) = 6*a(n-1) - 8*a(n-2) for n > 1, a(0)=1, a(1)=6.at n=14A171476
• a(n) = 6*a(n-1) - 8*a(n-2) for n > 1; a(0) = 6, a(1) = 28.at n=13A171496