2147483646
domain: N
Appears in sequences
- a(n) = 2^n - 2.at n=31A000918
- a(n) = 2^(2*n+1) - 2.at n=15A002446
- Number of aperiodic binary strings of length n; also number of binary sequences with primitive period n.at n=31A027375
- Row sums of triangle T(m,n) = number of solutions to 1 <= a(1) < a(2) < ... < a(m) <= n, where gcd(a(1), a(2), ..., a(m), n) = 1, in A020921.at n=30A038199
- Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to complement.at n=31A045663
- Euler totient function (A000010) of 2^n - 1.at n=30A053287
- a(1) = 1; for n>1, sum of binomial(n,k) as k runs over RRS(n), the reduced residue system of n.at n=30A056188
- Number of primitive (aperiodic) words of length n which contain exactly two different symbols.at n=30A056267
- a(n) is the closest number to 2^n which is divisible by n.at n=30A082894
- Number of n X n circulant invertible (0,1) matrices over the reals.at n=30A086323
- Number of ways of 3-coloring an annulus consisting of n zones joined like a pearl necklace.at n=30A092297
- Expansion of (1-x+2x^2)/((1-x)*(1-2x)).at n=30A095121
- a(n) = 2^n+(-1)^n-1.at n=31A099430
- A Horadam-Jacobsthal sequence.at n=30A101622
- Number of palindromes (in base 4) below 4^n.at n=29A117863
- Number of palindromes (in base 8) below 8^n.at n=19A117867
- a(n) = largest multiple of n which is <= 2^n.at n=30A128092
- Partial sums of A130752.at n=29A130869
- Residues of 3^(2^(p(n)-1)-1) for Mersenne numbers with prime indices.at n=10A131458
- Row sums of triangle A134066.at n=29A134067