18653761
domain: N
Appears in sequences
- Member r=18 of the family of Chebyshev sequences S_r(n) defined in A092184.at n=7A098303
- A204517(n)^2 = floor[A055859(n)/7]: Squares which written in base 7, with some digit appended, yield another square.at n=12A204513
- Terms of A227891 of the form (p*q)^2, where p <= q are odious primes (A027697).at n=14A231253