22984

Appears in sequences

• Coordination sequence for sigma-CrFe, Position Xf.at n=38A009958
• Distinct even numbers in the numerators of the 1/3-Pascal triangle (by row).at n=41A046559
• Distinct even numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/3-Pascal triangle (by row).at n=35A046562
• Expansion of (1+x^3*C^4)*C^2, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.at n=9A071739
• Number of permutations p of [n] satisfying i-2 <= p(i) <= i+4 for all i in [n].at n=11A072850
• Initial members of abundant quintuplets, i.e., values of k such that (k, k+2, k+4, k+6, k+8) are all abundant numbers.at n=4A108926
• Numbers k such that tau(k) = tau(k+1) mod 691, where tau is Ramanujan's tau function A000594.at n=35A121733
• G.f.: (2*x+4*x^2+4*x^3+4*x^4+2*x^5)/((1-x)^2*(1-x^2)^3*(1-x^3)^4*(1-x^4)).at n=14A127790
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+953)^2 = y^2.at n=7A129975
• Base-6 analog of A208059.at n=59A212995
• Initial members of abundant quadruplets, i.e., values of k such that (k, k+2, k+4, k+6) are all abundant numbers.at n=39A231089
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 633", based on the 5-celled von Neumann neighborhood.at n=26A273301
• a(n) = 34*n^2.at n=26A303302
• Bi-unitary deficient-perfect numbers: bi-unitary deficient numbers k for such that 2*k - bsigma(k) is a bi-unitary divisor of k, where bsigma(k) is the sum of bi-unitary divisors of k (A188999).at n=29A303358
• a(n) = n*(2*n - 3 - (-1)^n)*(5*n - 2 + (-1)^n)/16.at n=33A308025
• If F is the Fermat point of a triangle ABC with A < B < C < 2*Pi/3, where AB, BC, CA, FA, FB and FC are all positive integers, then, this sequence gives the sum FA + FB + FC when gcd(a, b, c) = A351477(n).at n=28A351476