253008

Appears in sequences

• a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+3), with T given by A026323.at n=5A027311
• Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to complement, inequivalent to reverse and reversed complement.at n=18A045668
• a(n) = 144*n^2 - 24*n (n>=1).at n=41A305072
• Number of length-n binary words containing no antisquares except 01 and 10.at n=29A307732