63756

Appears in sequences

• Coefficients of Chebyshev polynomials.at n=20A005583
• Theta series of A_23 lattice.at n=2A023914
• a(n) = n*(n+1)*(n+2)*(n+3)/4.at n=21A033487
• Partial sums of A007584.at n=20A051740
• Gaps associated with the arithmetic progressions in A093365.at n=27A093366
• Gaps associated with the arithmetic progressions in A093365.at n=28A093366
• Gaps associated with the arithmetic progressions in A093365.at n=29A093366
• Numerators of triangle T(n,k), n>=0, 0<=k<=n, read by rows: T(n,k) is the coefficient of x^(2k+1) in polynomial v_n(x), used to approximate x->sin(Pi*x)/Pi.at n=17A144859
• Number of ways to place 2 nonattacking knights on an n X n board.at n=18A172132
• 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=20A207363
• Triangle read by rows: T(n,k) (1 <= k <= n) = number of irreducible coverings by edges of the complete bipartite graph K_{n,k}.at n=20A210654
• Number of irreducible coverings by edges of the complete bipartite graph K_{n,n}; main diagonal of A210654.at n=5A210655
• Sequence of coefficients of x^1 in marked mesh pattern generating function Q_{n,132}^(0,4,0,0)(x).at n=21A212347
• G.f.: Product_{k>=1} (1 + x^(k*(k+1))) / (1 - x^k).at n=38A280423
• Number T(n,k) of ordered set partitions of [n] into k blocks such that equal-sized blocks are ordered with increasing least elements; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=51A285824
• Number of ordered set partitions of [n] into six blocks such that equal-sized blocks are ordered with increasing least elements.at n=3A285921
• G.f. satisfies A(x) = 1 + x^3*A(x)^4*(1 + x*A(x)).at n=19A365725
• Number of binary words of length n not containing the substrings 0000, 0001, 0011, 0111.at n=24A368430