61568

Appears in sequences

• a(n) = 1*t(n) + 2*t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2) and t = A000032 (Lucas numbers).at n=18A023861
• Number of 2n-bead balanced binary strings, rotationally equivalent to complement, inequivalent to reverse and reversed complement.at n=16A045659
• Period of the Lucas 4-step sequence A073817 mod n.at n=30A106295
• Period of the Lucas 4-step sequence A073817 mod prime(n).at n=10A106296
• Number of strings of numbers x(i=1..7) in 0..n with sum i*x(i)^2 equal to n*49.at n=12A184446
• a(n) = sigma(2*n^3) - sigma(n^3).at n=30A225959
• Numbers of the form (24*x + 1)*2^(y+6) with positive integers x and y.at n=35A231203
• Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0.at n=7A256744
• Numbers k such that k = rad(k) * sopfr(k), where rad(k) is the squarefree kernel of k and sopfr(k) the integer log of k.at n=22A280935