Sp = reversal of some square s where s = x^2 for x = 1,2,.. (ignoring leading zeros). Sp is in the sequence if it is semiprime.
A242097
Sp = reversal of some square s where s = x^2 for x = 1,2,.. (ignoring leading zeros). Sp is in the sequence if it is semiprime.
Terms
- a(0) =4a(1) =9a(2) =94a(3) =46a(4) =121a(5) =961a(6) =982a(7) =4a(8) =526a(9) =9a(10) =169a(11) =6511a(12) =5221a(13) =9481a(14) =1042a(15) =6313a(16) =4633a(17) =1843a(18) =1273a(19) =94a(20) =1405a(21) =9235a(22) =46a(23) =9886a(24) =6937a(25) =4069a(26) =10201a(27) =61801a(28) =94411a(29) =18811
External references
- oeis: A242097