127512

Appears in sequences

• a(n) = n*(n + 1)*(n + 2)*(n + 3)/2.at n=21A033486
• Number of ways to place a non-attacking white and black knight on n X n chessboard.at n=18A035289
• Irreducible polynomial coefficient of singular value associated with sqrt(2n).at n=34A078878
• Numbers that can be expressed as the difference of the squares of primes in exactly ten distinct ways.at n=6A092006
• a(n) = C(1+n,1) * C(2+n,1) * C(4+n,2).at n=20A112415
• a(n) = denominator of sum of the reciprocals of all terms in rows 1 through n of table A126336.at n=9A126339
• Numerators of u(n) where u(n) = (u(n-1) + u(n-2)) / u(n-3), with u(1) = u(2) = u(3) = 1.at n=20A185332
• Number of 3-step one or two collinear space at a time queen's tours on an n X n board summed over all starting positions.at n=24A187028
• a(n) = 3*binomial(n+1, 5).at n=22A253942
• Number of n X 5 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.at n=1A269273
• T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.at n=16A269276
• Number of 2 X n 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once.at n=4A269277