38610

Appears in sequences

• a(n) = 5*(n+1)*binomial(n+2, 5)/2.at n=8A027778
• a(n) = 9*(n+1)*binomial(n+2,9)/2.at n=4A027782
• Partial sums of A050484.at n=8A052255
• Number of labeled pure 2-complexes on n nodes (0-simplexes) with 5 2-simplexes and 8 1-simplexes.at n=8A054559
• McKay-Thompson series of class 34a for the Monster group.at n=47A058639
• a(n) = 18*(n - 2)*(2*n - 5).at n=33A060787
• Integers y such that for some integer x we have uphi(x) = uphi(y) = x-y, where uphi(n) = A047994(n) is the unitary totient function: If n = Product p_i^e_i, uphi(n) = Product (p_i^e_i - 1).at n=13A067741
• Triangle of coefficients, read by rows, where T(n,k) is the coefficient of x^n*y^k in f(x,y) that satisfies f(x,y) = (1+x) - x^2*(1+x)^2 + xy*f(x,y)^2.at n=63A086612
• Ninth column of (1,5)-Pascal triangle A096940.at n=8A096946
• a(n) = a(n-1) + 4*a(n-2) for n>1, a(0) = a(1) = 2.at n=11A102446
• Central coefficients of the triangle A132047.at n=8A144706
• a(n) = (2*n^3 + 5*n^2 - 3*n)/2.at n=32A162256
• a(n) = n*(2*n^2 + 5*n + 3).at n=26A163815
• Numbers n such that sigma(n) = 14*phi(n) (where sigma=A000203, phi=A000010).at n=5A171259
• Numbers with prime factorization pqrst^3.at n=26A189984
• Array read by rows: row n lists the coefficients of the characteristic polynomial of the n-th principal submatrix of max(2i-j, 2j-i), as in A204154.at n=29A204155
• List of integers m>0 with m-1 and m+1 both prime, and m-2, m, m+2 all practical.at n=13A209236
• Averages y of twin prime pairs that satisfy y = x^2 + x - 2.at n=15A214840
• a(n) = - 12*a(n-1) - 54*a(n-2) - 112*a(n-3) - 105*a(n-4) -36*a(n-5) - 2*a(n-6), with a(0)=3, a(1)=-6, a(2)=18, a(3)=-60, a(4)=210, a(5)=-756.at n=8A215635
• Oscillating orbitals over n sectors (nonpositive values indicating there exist none).at n=15A232500