25856

Appears in sequences

• Numbers that are the sum of 4 nonzero squares in exactly 7 ways.at n=43A025363
• Number of 6 X 6 binary matrices with n ones, with no zero rows or columns, up to row and column permutation.at n=12A056037
• Expansion of (1-x)/(1+2*x^2+2*x^3).at n=24A078037
• 2^(n-1)*(n^2+2n+2).at n=9A084850
• Numbers k such that (10^k-1)^2 + 2 is prime.at n=16A169602
• A triangle of coefficients based on the squares of the Chebyshev T and U polynomials: p(x,n)=If[Mod[n, 2] == 0, (ChebyshevT[n + 1, x]^2 + x^2*ChebyshevU[n, x]^2)/(2*x^2), (-1 + ChebyshevT[n + 1, x]^2 + x^2*ChebyshevU[n, x]^2)/(2*x^2)].at n=55A173335
• Products of the 8th power of a prime and a distinct prime (p^8*q).at n=25A179668
• Number of 0..n arrays x(0..3) of 4 elements without any interior element greater than both neighbors.at n=14A200887
• If n mod 2 = 0 then 2^(n-1)*(3^n+3*3^(n/2)-2) otherwise 2^(n-1)*(3^n+5*3^((n-1)/2)-2).at n=6A232494
• Number of partitions of n the largest part of which, call it m, appears once, m-1 appears at most twice, m-2 appears at most thrice, etc.at n=40A244393
• Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 8 as largest digit.at n=39A257368
• Values of n such that there are exactly 7 solutions to x^2 - y^2 = n with x > y >= 0.at n=37A257414
• Number of length n arrays of permutations of 0..n-1 with each element moved by -4 to 4 places and every four consecutive elements having its maximum within 4 of its minimum.at n=22A263713
• Numbers n such that n and n+1 both have 18 divisors.at n=2A274360
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 181", based on the 5-celled von Neumann neighborhood.at n=16A279672
• 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 214", based on the 5-celled von Neumann neighborhood.at n=15A286737
• a(n) = 17*n^2 - 1.at n=39A321180
• Number of integer partitions of n with no two distinct consecutive parts divisible.at n=52A328675
• Numbers m such that phi(m)*tau(m) is a square but phi(m)/tau(m) is not the square of an integer.at n=17A341940
• Numbers m such that the decimal representation of 8^m ends in m.at n=3A351410