a(n) defines the first brilliant number, b_n, greater than 10^n. If n is odd or zero, then b_n is 10^n+a(n); and if n is a positive even number, then b_n is {10^(n/2)+a(n)}^2.
A084475
a(n) defines the first brilliant number, b_n, greater than 10^n. If n is odd or zero, then b_n is 10^n+a(n); and if n is a positive even number, then b_n is {10^(n/2)+a(n)}^2.
Terms
- a(0) =3a(1) =0a(2) =1a(3) =3a(4) =1a(5) =13a(6) =9a(7) =43a(8) =7a(9) =81a(10) =3a(11) =147a(12) =3a(13) =73a(14) =19a(15) =3a(16) =7a(17) =831a(18) =7a(19) =49a(20) =19a(21) =987a(22) =3a(23) =691a(24) =39a(25) =183a(26) =37a(27) =4153a(28) =31a(29) =279
External references
- oeis: A084475