589824

Appears in sequences

• a(n) = (n+2)*2^(n-1).at n=16A001792
• a(n) = 9*4^n.at n=8A002063
• a(n) = n*4^(n-1).at n=9A002697
• a(n) = 9*2^n.at n=16A005010
• Theta series of laminated lattice LAMBDA_9.at n=25A005933
• Denominators of an asymptotic expansion for the number of forests on n nodes (A001858).at n=11A006573
• Berstel sequence: a(n+1) = 2*a(n) - 4*a(n-1) + 4*a(n-2).at n=26A007420
• a(n) = 2^n*n^2.at n=12A007758
• Triangle of coefficients in expansion of (1+4x)^n.at n=53A013611
• Triangle of coefficients in expansion of (1+4x)^n.at n=52A013611
• Numbers of the form 4^i * 9^j, with i, j >= 0.at n=37A025620
• Triangle read by rows: (i,j)-th entry is binomial(i,j)*3^(i-j)*8^j.at n=26A038226
• Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j).at n=47A038231
• Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j).at n=46A038231
• Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*3^j.at n=22A038281
• 3-fold convolution of A000302 (powers of 4).at n=7A038845
• Mean integral quotients associated with A048753.at n=12A048754
• a(n) = Sum_{k=0..floor(n/2)} k*binomial(n,2*k) = floor(n*2^(n-3)).at n=18A049610
• Number of compositions of n into 3*j-1 kinds of j's for all j >= 1.at n=10A055841
• Smallest positive integer for which the number of divisors is a product of 2 distinct primes: Min{x; d[x]=pq}.at n=13A061148