22964

Appears in sequences

• Numbers k such that (k^2 - 8)/2 is a square.at n=5A077445
• Nonnegative integers m such that m^2 = (a^2-1)*(b^2+1) for some integers a,b.at n=44A174134
• Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1+x+x^2)/(1-3*x-5*x^2).at n=7A180140
• a(n) = (7*3^n + 1)/2.at n=8A199109
• a(n) = (7*9^n + 1)/2.at n=4A199566
• Vinogradov's constants arising in enumeration of solutions to Waring's problem in the evil numbers (A001969).at n=33A206375
• a(n) = Pell(n)*A033719(n) for n>=1, with a(0)=1, where A033719 lists the coefficients in theta_3(q)*theta_3(q^7).at n=11A209454
• a(n) = Pell(n)*A002652(n) for n>=1, with a(0)=1, where A002652 lists the coefficients in theta series of Kleinian lattice Z[(-1+sqrt(-7))/2].at n=11A209455
• Sum of the denominators of the Farey series of order n (A006843).at n=48A240877
• Value of concatenation of all suffixes of binary representation of n.at n=22A241426
• Square array A by downward antidiagonals: A(n,k) = (3 + 3^n*(2*floor(3*k/2) - 1))/6, n,k >= 1; read as A(1,1), A(1,2), A(2,1), A(1,3), A(2,2), A(3,1), ...at n=63A254051
• Rectangular array A read by upward antidiagonals in which the entry in row n and column k is defined by A(n,k) = S(4*A257499(n,k) - 3), n,k >= 1, where the function S is as defined in A257480.at n=46A254067
• Rectangular array A read by upward antidiagonals in which the entry in row n and column k is defined by A(n,k) = 5 + 9*A005836(2^(k - 1)*(2 n - 1)), n,k >= 1.at n=34A265159
• Records in the numbers of representations of k^2 as x^2 - x*y + y^2, x > 2*y >= 0, corresponding to the numbers of grid points with squared radius A357302(n)^2 in an angular sector 0 <= phi < Pi/6 of the triangular lattice.at n=22A357303
• The number of unilevel points (unique points at their height) on Delannoy paths ending when x = n.at n=11A371596