25690112

Appears in sequences

• Number of 4 X n binary matrices avoiding simultaneously the right angled numbered polyomino patterns (ranpp) (10;0) and (01;1).at n=14A100313
• a(n)=n for n <= 3, a(n) = 2a(n-1) - 2a(n-2) + 2a(n-3) for n >= 4.at n=40A104767
• Number of subsets of {1,2,...,n} which contain no three consecutive odd numbers.at n=25A127195
• a(n) = (2*n-8)^2 * 2^(n-3).at n=18A135466
• Determinant of the n-th principal submatrix of A204237.at n=10A204238
• a(n+6) = 6*a(n+4) - 12*a(n+2) + 8*a(n), a(0)..a(5) = 8,0,9,0,8,0.at n=36A243456
• Let S_k denote the sequence of numbers j such that A001222(j) - A001221(j) = k. Then a(n) is the n-th term of S_n.at n=18A261256