26060

Appears in sequences

• Numbers n such that sigma(reverse(n)) = phi(n).at n=15A070856
• A089450 indexed by A000040.at n=18A089525
• Number of levels in the compositions of n with odd summands.at n=19A094188
• Site series for first perpendicular moment of 4.8 (bathroom tile) lattice.at n=25A120560
• Triangle read by rows: Hultman numbers: a(n,k) is the number of permutations of n elements whose cycle graph (as defined by Bafna and Pevzner) contains k cycles for n >= 0 and 1 <= k <= n+1.at n=38A164652
• Triangle T(n,k) read by rows: coefficients (in compressed forms) in order of decreasing exponents of polynomials p_n(t) related to Hultman numbers.at n=23A185263
• Triangle of coefficients of polynomials u(n,x) jointly generated with A209163; see the Formula section.at n=50A209162
• Expansion of Product_{k>=0} 1/(1-x^(5*k+1))^(5*k+1).at n=40A285049
• Expansion of e.g.f. ( Product_{k>0} (1 + x^k)^(1/k) )^exp(x).at n=7A354503
• Numbers X such that X^2 + Y^2 = 2^(2*k) + 1 and X > Y > 0 and k is the binary digit length of X-1.at n=46A369703