Sphenic numbers k = p*q*r such that reversal(k) is also a sphenic number and reversal(k) = reversal(p)*reversal(q)*reversal(r).

A242726

Sphenic numbers k = p*q*r such that reversal(k) is also a sphenic number and reversal(k) = reversal(p)*reversal(q)*reversal(r).

Terms

    a(0) =66a(1) =286a(2) =606a(3) =682a(4) =2222a(5) =2486a(6) =2626a(7) =2882a(8) =3333a(9) =3939a(10) =5555a(11) =6262a(12) =6842a(13) =6886a(14) =7777a(15) =9393a(16) =14443a(17) =18887a(18) =22462a(19) =22682a(20) =22826a(21) =24266a(22) =26422a(23) =26462a(24) =26686a(25) =28622a(26) =33693a(27) =34441a(28) =36399a(29) =39633

External references