366503875925
domain: N
Appears in sequences
- a(n) = (4^n - 1)/3.at n=20A002450
- A Jacobsthal sequence trisection.at n=13A082311
- Column 1 of the array in A107735.at n=38A107732
- a(n) = (2^prime(n) - 8)/24 for n>=2.at n=12A121290
- The Jacobsthal sequence, dropping each third term.at n=26A141355
- a(n) is the number whose binary expansion is A153500(n).at n=19A153499
- a(n) = (16^n-1)/3.at n=10A195156
- a(n) = (4^A001651(n+1) - 1)/3: numbers (4^k-1)/3 for k > 1, not multiples of 3.at n=12A198586
- Binary representations of n and n^2 have no common 3-digit substring.at n=25A276692
- Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 129", based on the 5-celled von Neumann neighborhood.at n=38A279030
- Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 553", based on the 5-celled von Neumann neighborhood.at n=40A282577
- a(n) = p(1,n), where p(x,n) is the strong divisibility sequence of polynomials based on sqrt(2) as in A327320.at n=19A329006
- a(n) = Sum_{k=0..n} binomial(2*n,3*k).at n=20A387843