13107200

Appears in sequences

• Generalized Euler phi function (for p=3).at n=15A003474
• a(n) = n*2^(n-6).at n=19A078836
• Maximal coefficient (in absolute value) of the minimal polynomial P with integer coefficients such that P(sin(Pi/n)) = 0.at n=24A081797
• Second differences of A129952.at n=21A129954
• Row sums of triangle A133935.at n=21A131352
• Number of connected components in the double Bruhat cells for simple Lie groups of type B_n (or C_n).at n=18A131769
• Number of binary strings of length n with equal numbers of 0001 and 1000 substrings.at n=24A164161
• Expansion of (1+8x^2+8x^3)/((1-2x)^2*(1+2x+4x^2)).at n=19A168057
• a(n) = (n - 3)^2*(n - 4)*2^n*n^(n-5).at n=5A232995
• Number of n X 1 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.at n=10A269822
• p-INVERT of (1,1,1,1,1,...), where p(S) = (1 - S^2)^3.at n=20A291013
• a(n) is the first term of A351048 with n prime factors, counted with multiplicity, or 0 if there is no such term.at n=21A370935
• a(n) = n*(6*n^4 + 8*n^3 + 1 - (-1)^n)/16.at n=32A374709