27685

Appears in sequences

• Number of primitive (period n) periodic palindromic structures using a maximum of four different symbols.at n=18A056515
• a(n) = the smallest multiple of the n-th prime such that (a(n)+1) is divisible by both the (n-1)th prime and the (n+1)st prime.at n=28A143243
• Positive numbers y such that y^2 is of the form x^2+(x+343)^2 with integer x.at n=21A157246
• Isomers of deoxyaldytols.at n=6A323935