48741

Appears in sequences

• a(n) = (n^4 + n^2 + 2*n)/4.at n=21A006528
• Numbers n such that mu(n) + mu(n+1) + mu(n+2) + mu(n+3) + mu(n+4) + mu(n+5) + mu(n+6) = 6.at n=32A082967
• Triangle read by rows: T(n,k) is the number of involutions of {1,2,...,n} having genus k (see first comment for definition of genus).at n=68A178515
• G.f.: Sum_{k>=1} (k^4 * x^(k^2) / Product_{j=1..k} (1 - x^j)).at n=35A333152
• Number of integer partitions of n such that the maximum is greater than or equal to twice the median.at n=41A361859