26496

Appears in sequences

• Expansion of log(1+x)/cosh(log(1+x)).at n=9A009430
• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 81.at n=36A031579
• Number of possible rook moves on an n X n chessboard.at n=23A035006
• Number of degree-n permutations of order dividing 24.at n=8A053504
• Numbers k such that k^10 == 1 (mod 11^4).at n=16A056094
• Sum of divisors of numbers containing in their decimal representation only the digits 0 and 1.at n=25A077810
• Row sums of triangle A093846.at n=3A093849
• E.g.f. exp(x)*BesselI(2,2*sqrt(3)*x)/3.at n=9A098522
• Numbers k such that if you subtract k from its reversal you get a positive number with the same digits as k.at n=10A121970
• a(2*n) = (n+1)*a(n), a(2*n+1) = (n+1)*a(n+1), with a(1) = 1.at n=43A171609
• Numbers with prime factorization pq^2r^7.at n=9A190466
• a(n) = sigma(2*n)^2 - sigma(n)^2.at n=39A227733
• The greedy sequence of real numbers at least 1 that do not contain any 3-term geometric progressions with integer ratio.at n=24A235054
• Sum of cubes of proper divisors of n.at n=53A276634
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 57", based on the 5-celled von Neumann neighborhood.at n=14A285607
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 222", based on the 5-celled von Neumann neighborhood.at n=35A286776
• Number of ordinary double points of a family of threefolds.at n=14A294604
• E.g.f. satisfies A(x) = exp( x * exp(x^3) / A(x) ).at n=7A362674
• 3-abundant numbers k such that k/(sigma(k)-3*k) is an integer.at n=41A364976
• Expansion of e.g.f. -log(1 - x^2/2 * (exp(x) - 1)).at n=9A368173