1621963

Appears in sequences

• Number of length n arrays x(i), i=1..n with x(i) in i..i+5 and no value appearing more than 3 times.at n=7A250358
• a(n) = numerator(b(n)), where b(n) = b(n-1) + n if n is odd and b(n-1)*n/(b(n-1) + n) if n is even, with b(0) = 0.at n=13A392570