34359869440
domain: N
Appears in sequences
- a(n) = (4^n + 4^[ n/2 ] )/2.at n=16A001446
- a(n) = 2^(n-1)*( 2^n + (-1)^n ).at n=18A003665
- a(n) = 2^(n-1)*(1+2^n).at n=18A007582
- a(n) = 4^n*(4^n+1)/2.at n=9A026244
- Number of reversible strings with n beads of 4 colors.at n=18A032121
- a(n) = (n^12 + n^6)/2.at n=8A071235
- a(n) = n^9*(n^9 + 1)/2.at n=4A170791
- Triangular numbers representable as 2^x + 2^y.at n=19A262242
- Number of degree n polynomials f with all nonzero coefficients equal to 1 such that f(k) is divisible by 4 for all integers k.at n=39A309846
- a(n) = Sum_{k=0..n} n^k * binomial(2*n,2*k).at n=9A333990
- Terms of A354169 that are not powers of 2, in order of appearance.at n=33A354680
- Cogrowth sequence of the 16-element quasihedral group SD16 = <S,T | S^8, T^2, STS^5T>.at n=19A377885
- Cogrowth sequence of the 16-element group C2^2:C4 = <S,T | S^4, T^2, (ST)^2, (S^2T)^2>.at n=19A377946