26912

Appears in sequences

• Multiplicity of highest weight (or singular) vectors associated with character chi_193 of Monster module.at n=39A034581
• Numbers k such that sigma(k) - 2k is prime.at n=40A064271
• Product of the 5th power of a prime and different distinct prime of the 2nd power (p^5*q^2).at n=12A179646
• Number of (w,x,y,z) with all terms in {1,...,n} and 2|w-x|=|x-y|+|y-z|.at n=34A212575
• E.g.f. satisfies: A(x) = exp( Integral 1 + x*A(x)^2 dx ), where the constant of integration is zero.at n=7A212913
• Numbers k such that sigma(k) + tau(k) + phi(k) is a prime, where sigma(k) = A000203(k), tau(k) = A000005(k) and phi(k) = A000010(k).at n=13A229265
• Number of (n+1) X (5+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock.at n=9A235951
• a(n) = 32*n^2.at n=29A244082
• Achilles numbers which are coprime to the sum of their divisors.at n=34A248022
• Number of (3+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.at n=11A252535
• Numbers k such that the sum of the divisors of k is of the form m^3 + 1.at n=33A289384
• Expansion of Product_{k>=1} 1/(1 - x^k - x^(2*k) - x^(3*k)).at n=16A320286
• Primitive coreful abundant numbers: coreful abundant numbers having no coreful abundant aliquot divisor.at n=18A339940
• Primitive coreful Zumkeller numbers: coreful Zumkeller numbers (A339979) having no coreful Zumkeller aliquot divisor.at n=9A339981
• Numbers k for which sqrt(k/2) divides k and the symmetric representation of sigma(k) consists of a single part and its width at the diagonal equals 1.at n=30A365265
• a(n) = T(n, 3), where T(n, k) = Sum_{i=0..n} i^k * binomial(n, i) * (1/2)^(n-k).at n=29A366151
• a(n) is the least m > 0 such that sigma(m) - 2m = A140863(n).at n=51A380866
• Achilles numbers sandwiched between two semiprimes.at n=15A380937