40353608

Appears in sequences

• Numbers that are the sum of 2 positive 9th powers.at n=21A003391
• Numbers that are the sum of at most 2 positive 9th powers.at n=29A004886
• a(n) = sigma_9(n), the sum of the 9th powers of the divisors of n.at n=6A013957
• Numerator of sum of -9th powers of divisors of n.at n=6A017681
• a(n) = 7^n + 1.at n=9A034491
• Numbers whose cube is palindromic in base 7.at n=27A046237
• Numbers of the form (7^{mr}-1)/(7^r-1) for positive integers m, r.at n=21A076286
• a(n) = sigma_9(2n-1).at n=3A081866
• a(n) = Sum_{0<d|n, n/d odd} d^9.at n=6A096962
• a(n) = 7^n + 1 - 0^n.at n=9A103458
• a(n) = smallest number that leads to a new cycle under the base-7 Kaprekar map of A165071.at n=8A165087
• a(n) = Sum_{d|n} d^(d + 1 + n/d).at n=6A294608
• a(n) = Sum_{d|n} d^(n+2).at n=6A294810
• Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = Sum_{d|n} d^(n+k).at n=42A308504
• a(n) = Sum_{d|n} (-1)^(d-1)*d^9.at n=6A321548
• a(n) = Sum_{d|n} (-1)^(n/d+1)*d^9.at n=6A321554
• a(n) = Sum_{d divides n} (-1)^(d + n/d) * d^9.at n=6A321565
• Sum of 9th powers of odd divisors of n.at n=6A321813
• Sum of 9th powers of odd divisors of n.at n=13A321813
• Sum of the 9th powers of the squarefree divisors of n.at n=6A351272