45108

Appears in sequences

• Let r, s, t, u be four permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)*s(i)*t(i)*u(i).at n=16A070736
• Integer ceiling of coefficients of exp(x*A(x)).at n=14A085294
• Numbers n such that n^6 + 545 is prime.at n=32A163592
• G.f. satisfies A(x) = 1 + x^5*A(x)^4 / (1 - x*A(x)).at n=26A365701
• Terms of A319928 that are congruent to 4 modulo 8: Numbers k == 4 (mod 8) such that there is no other m such that (Z/mZ)* is isomorphic to (Z/kZ)*, where (Z/kZ)* is the multiplicative group of integers modulo k.at n=36A372755