316275

Appears in sequences

• a(n) = 6*4^n - 12*3^n + 7*2^n - 1.at n=8A091347
• Number of permutations of 1..n with i-7<=p(i)<=i+3.at n=10A179345
• E.g.f.: Sum_{n>=1} (1 - exp(-n^2*x))^n / n.at n=3A220179