215760

Appears in sequences

• a(n) = n*(n+1)*(n+2)*(n+3)/4.at n=29A033487
• Numbers that can be written as a product of k consecutive composite numbers and also of k+1 consecutive composite numbers, for some k>1, with no factor used twice.at n=5A175340
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=28A207363
• Number A(n,k) of endofunctions f on [2n] satisfying f^k(i) = i for all i in [n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=40A246070
• Number of endofunctions f on [2n] satisfying f^n(i) = i for all i in [n].at n=4A246071
• Numbers that can be written as a product of k consecutive composite numbers and also of k+1 consecutive composite numbers, for some k>1.at n=5A342876
• Numbers that can be expressed both as the product of two consecutive composite numbers and as the product of three consecutive composite numbers.at n=2A343459