27576

Appears in sequences

• Expansion of sinh(log(1+x))*log(1+x)/2.at n=8A024337
• Numerators of continued fraction convergents to sqrt(574).at n=5A042100
• McKay-Thompson series of class 24H for Monster.at n=30A058578
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having exactly k entries that are midpoints of 321 patterns (0 <= k <= n-2 for n >= 2; k=0 for n=1).at n=35A145879
• Triangle read by rows: a(m,m) = 1, for all m. For n < m, a(m,n) = a(m-1,n) + (sum of all terms in rows 1 through m-1).at n=29A159924
• Penultimate diagonal of triangle in A145879.at n=6A182543
• Triangle T(n,k), read by rows, given by (1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, ...) DELTA (0, 0, 1, 1, 2, 2, 3, 3, 4, 4, ...) where DELTA is the operator defined in A084938.at n=51A202992
• Number of nX1 0..2 arrays with exactly floor(nX1/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order.at n=15A222395
• Number of nX2 0..2 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=7A222684
• T(n,k)=Number of nXk 0..2 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.at n=43A222690
• The number of regions inside a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=14A341877
• For 1<=x<=n, 1<=y<=n with gcd(x,y)=1, write 1 = gcd(x,y) = u*x+v*y with u,v minimal; a(n) = m^2*s, where s is the population variance of the values of |u| and m is the number of such values.at n=12A345694
• Maximum number of induced copies of the diamond graph K_{1,1,2} in an n-node graph.at n=33A352668
• G.f. A(x) satisfies A(x) = ( 1 + x * (1 + x*A(x)^(3/2)) )^2.at n=11A378411
• Number of tetrahedra in the n X n black bishop graph.at n=18A391766