72097

Appears in sequences

• Numbers that are the sum of 2 nonzero 8th powers.at n=8A003380
• Numbers that are the sum of at most 2 nonzero 8th powers.at n=13A004875
• Numbers that are the sum of at most 3 nonzero 8th powers.at n=26A004876
• Centered cube numbers: a(n) = (n+1)^8+n^8.at n=3A036086
• a(n) = 3^n + 4^n.at n=8A074605
• Generalized Fermat numbers of the form (k+1)^2^m + k^2^m, with m>1.at n=16A078901
• a(0)=1, a(1)=3, a(n) = 6*a(n-1) - 7*a(n-2), n >= 2.at n=8A083878
• G.f.: (2-x)/((1+3x)(1-4x)); e.g.f.: exp(4x) + exp(-3x); a(n) = 4^n + (-3)^n.at n=8A087452
• Numbers that are sums of 8th powers of 2 distinct positive integers.at n=5A155468
• Quartan semiprimes: semiprimes of the form x^4 + y^4, x>0, y>0.at n=34A182277
• T(n,k)=Number of (n+1)X(n+1) -k..k symmetric matrices with every 2X2 subblock having sum zero.at n=42A210694
• Sum of the 8th powers of the digits of n.at n=34A210840
• Numbers which are the sums of consecutive eighth powers.at n=8A217848
• Numbers k such that 3*R_k + 50 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=21A256800
• Number of subsets of {1..n} such that a unique set can be obtained by choosing a different binary index of each element.at n=27A370638