67900

Appears in sequences

• a(n) = (2*n^3 + 5*n^2 - 5*n)/2.at n=39A162265
• T(n,k) = number of circular arrays of n 1's, n -1's, and k 0's such that no two adjacent elements are equal.at n=44A283614
• Expansion of (1 + x)^2 / ((1 - x)^2*(1 + 2*x + 2*x^2)^2).at n=27A322040
• a(n) = (n^4 + 5*n^3 + 11*n^2 + 7*n)/6.at n=24A332697
• a(n) is the number of ways to write prime(n) as a sum of distinct composites.at n=33A381251