43296

Appears in sequences

• Numbers k such that in k and k^2 the parity of digits alternates.at n=43A030153
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 13.at n=17A031691
• Theta series of D8 lattice with respect to midpoint of edge.at n=17A045820
• a(n) = direuler(p=2,n,1/(1-X)/(1-p*n*X))[n].at n=34A089745
• a(n) = sigma_3(n) - sigma_1(n).at n=34A092348
• a(n) = 169*n^2 + 2*n.at n=15A158220
• a(n) = A000108(n)*A002605(n+1), where A000108 are the Catalan numbers.at n=6A185020
• Number of (w,x,y,z) with all terms in {1,...,n} and w + x > 2y + 2z.at n=24A212564
• Numbers k such that both k and k^2 are sums of a twin prime pair.at n=12A213784
• Number of endofunctions on [n] whose cycle lengths are Fibonacci numbers.at n=6A273994
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 0, a(1) = 0, a(2) = 1, a(3) = 2.at n=21A295724
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 0, a(1) = -1, a(2) = 2, a(3) = 1.at n=20A295851
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 0, a(1) = 0, a(2) = 2, a(3) = 3.at n=20A295857