26353

Appears in sequences

• a(n) = |1^3 - 2^3 + 3^3 - 4^3 + ... + (-1)^(n+1)*n^3|.at n=37A011934
• Strong pseudoprimes to base 69.at n=18A020295
• a(n) = (2*n+1)*(10*n+1).at n=36A033574
• Number of divisors of 240^n.at n=18A103532
• a(n) = 1 + (144 + (50 + (35 + (10 + n)*n)*n)*n)*n/120.at n=18A145127
• a(n) = 73*n^2.at n=19A174334
• Numbers n such that d(n + d(n)) = d(n), where d(n) is the sum of the distinct primes dividing n.at n=29A175760
• Number of nX2 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=8A201229
• T(n,k)=Number of nXk 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=46A201235
• Left inverse of A277558.at n=19A277578
• Numbers m > 1 such that every prime divisor p of m satisfies s_p(m) = p.at n=16A324458
• The number of imprimitive Carmichael numbers (A328935) below 10^n.at n=12A328936
• Triangle of coefficients in g.f. A(x,y) which satisfies: A(x,y) = Sum_{n>=0} x^n/(1 - x*y*A(x,y)^(2*n)).at n=57A340934
• a(n) is the least triprime k such that k + n is the next triprime after k.at n=19A366673
• Composite numbers for which A324644(n)/A324198(n) = 2 and sigma(n) == 2 (mod 4).at n=22A371082
• Numbers k that are the maximum of integers |k3|, |k5|, |k7| with |k3| + |k5| + |k7| > 0, and |k3*sqrt(3) + k5*sqrt(5) + k7*sqrt(7)| is smaller than for any smaller value of k.at n=12A379918
• Sum of squares of the multiplicities of pairwise distances among the vertices of a regular n-gon.at n=35A387858