Prime vampire numbers: semiprimes x*y such that x and y have the same number of digits and the union of the multisets of the digits of x and y is the same as the multiset of digits of x*y.
A289911
Prime vampire numbers: semiprimes x*y such that x and y have the same number of digits and the union of the multisets of the digits of x and y is the same as the multiset of digits of x*y.
Terms
- a(0) =117067a(1) =124483a(2) =146137a(3) =371893a(4) =536539a(5) =10349527a(6) =10429753a(7) =10687513a(8) =11722657a(9) =11823997a(10) =12451927a(11) =12484057a(12) =12894547a(13) =13042849a(14) =14145799a(15) =14823463a(16) =17204359a(17) =18517351a(18) =18524749a(19) =18647023a(20) =19262587a(21) =19544341a(22) =19554277a(23) =20540911a(24) =20701957a(25) =21874387a(26) =30189721
External references
- oeis: A289911