73681302249
domain: N
Appears in sequences
- Squares of Lucas numbers.at n=26A001254
- Squares of odd Lucas numbers.at n=17A014730
- a(n) and floor(a(n)/5) are both squares; i.e., squares which remain squares when written in base 5 and last digit is removed.at n=19A055812
- a(n) = L(n)*C(n), L(n)=Lucas numbers (A000032), C(n)=reflected Lucas numbers (see comment to A061084).at n=26A075150
- a(n) = Lucas(4n)+2 = Lucas(2n)^2.at n=13A081069
- a(n) = Fibonacci(2*n+1) + Fibonacci(2*n-1) + 2.at n=26A092387
- Number of ways to place k non-attacking knights on a 2 X n horizontal cylinder, summed over all k>=0.at n=25A201222
- Duplicate of A092387.at n=26A240926
- Number of non-attacking bishop positions on a cylindrical 2 X 2n chessboard.at n=13A286810