2097153

Appears in sequences

• a(n) = 2^n + 1.at n=21A000051
• a(n) = (n-1)*2^n + 1.at n=17A000337
• Numbers that are the sum of 2 positive 7th powers.at n=28A003369
• Numbers that are the sum of 3 nonzero 10th powers.at n=16A004803
• Numbers that are the sum of at most 3 nonzero 10th powers.at n=31A004898
• a(n) = sigma_21(n), the sum of the 21st powers of the divisors of n.at n=1A013969
• Numerator of sum of -21st powers of divisors of n.at n=1A017705
• Pisot sequence L(5,9).at n=19A020737
• Sum of seventh powers of unitary divisors.at n=7A034681
• Centered cube numbers: (n+1)^21 + n^21.at n=1A036099
• Sums of 2 distinct powers of 8.at n=21A038484
• Numbers whose cube is palindromic in base 8.at n=12A046239
• Pisot sequence L(3,5).at n=20A048578
• Binary encoding of A006881, numbers with two distinct prime divisors.at n=46A048639
• Summatory Rudin-Shapiro sequence for 2^(n-1).at n=41A051032
• a(2*n+1) = 1, a(2*n) = 2*a(2*n-2) - 1.at n=42A052552
• Expansion of (2-2*x-x^3)/((1-2*x)*(1-x^3)).at n=21A052935
• Expansion of (2-3*x-x^2+x^3)/((1-x)*(1+x)*(1-2*x)).at n=22A052950
• Sum of n-th powers of digits of n.at n=21A055207
• Sums of two powers of 8.at n=28A055259