205453

Properties

Appears in sequences

• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0001-0001 pattern in any orientation.at n=12A147284
• Number of nondecreasing arrangements of n+2 numbers in 0..7 with each number being the sum mod 8 of two others.at n=13A183910
• Prime numbersat n=18421