8589934590
domain: N
Appears in sequences
- a(n) = 2^n - 2.at n=33A000918
- a(n) = 2^(2*n+1) - 2.at n=16A002446
- Number of Barlow packings with group P63/mmc(S) that repeat after 4n layers.at n=33A011946
- Largest solution of phi(x) = 2^n.at n=31A058215
- Integers n such that sigma(phi(n))/n = 1/2.at n=5A074777
- Expansion of (1-x+2x^2)/((1-x)*(1-2x)).at n=32A095121
- A Horadam-Jacobsthal sequence.at n=32A101622
- Number of palindromes (in base 4) below 4^n.at n=31A117863
- Numbers such that 2*UnitaryPhi(2*UnitaryPhi(n)) = n.at n=29A120453
- Row sums of triangle A134066.at n=31A134067
- a(n) = 2^n - (3-(-1)^n)/2.at n=33A141023
- A007318 * A143098.at n=33A143100
- Row sums of triangle A166455.at n=32A166456
- Smallest number m such that exactly n editing steps (insert or substitute) are necessary to transform the binary representation of m into the least prime not less than m.at n=31A171402
- Duplicate of A011946.at n=33A195095
- Numbers n such that phi(n) divides n+2.at n=12A207667
- A subsequence of the denominators of the Bernoulli numbers: a(n) = A027642(A131577(n)).at n=20A219196
- A subsequence of the denominators of the Bernoulli numbers: a(n) = A027642(A131577(n)).at n=19A219196
- A subsequence of the denominators of the Bernoulli numbers: a(n) = A027642(A131577(n)).at n=18A219196
- A subsequence of the denominators of the Bernoulli numbers: a(n) = A027642(A131577(n)).at n=17A219196