536870911

Appears in sequences

• a(n) = 2^n - 1. (Sometimes called Mersenne numbers, although that name is usually reserved for A001348.)at n=29A000225
• Mersenne numbers: 2^p - 1, where p is prime.at n=9A001348
• Numerators of the Taylor coefficients of (e^x-1)^2.at n=28A002678
• Divisors of 2^29 - 1.at n=7A003537
• Number of nonzero coefficients of order n in Baker-Campbell-Hausdorff expansion.at n=31A005489
• If n mod 4 = 0 then 2^(n-1)+1 elif n mod 4 = 2 then 2^(n-1)-1 else 2^(n-1).at n=29A007679
• Stirling numbers of second kind S2(30,n).at n=1A011579
• Jacobsthal-Lucas numbers.at n=29A014551
• Cyclotomic polynomials at x=2.at n=29A019320
• Number of moves needed to solve an (n+1)-ring baguenaudier if two simultaneous moves of the two end rings are counted as one.at n=29A051049
• Number of points of period n under the dual of the map x->2x on Z[1/6].at n=28A059990
• Positions of nonzero coefficients in cyclotomic polynomial Phi_n(x), converted from binary to decimal.at n=29A063670
• Positions of positive coefficients in cyclotomic polynomial Phi_n(x), converted from binary to decimal.at n=29A063696
• Zsigmondy numbers for a = 2, b = 1: Zs(n, 2, 1) is the greatest divisor of 2^n - 1 (A000225) that is coprime to 2^m - 1 for all positive integers m < n.at n=28A064078
• A multiplicative version of 2^n - 1 (A000225).at n=28A064084
• Mersenne composites: 2^prime(m) - 1 is not a prime.at n=2A065341
• Squarefree part of 2^n-1 : the smallest number such that a(n)*(2^n-1) is a square.at n=28A069112
• Number of irreducible indecomposable permutations of degree n.at n=30A078485
• Sum of terms in row n of A081532.at n=28A081533
• a(n) = 2*4^n - 1.at n=14A083420