68677

Appears in sequences

• Number of parts in all partitions of all the numbers in {1,2,...,n} into distinct parts.at n=43A015724
• [ (4th elementary symmetric function of P(n))/(2nd elementary symmetric function of P(n)) ], where P(n) = {1, p(1), p(2), ..., p(n-1)}, where p(0) = 1.at n=22A024535
• Irregular triangle read by rows: T(n,i) = number of n X n semi-canonical binary matrices with exactly i 1's, where 0 <= i <= n^2.at n=83A268523
• Numbers k such that k![6]-2 is prime, where k![6] = A085158 (k) = sextuple factorial.at n=40A283485