Least integer k such that the set of the divisors of k contains exactly n pairs of numbers having the following property: for each pair of two distinct divisors, the reversal of one is equal to the other.
A260705
Least integer k such that the set of the divisors of k contains exactly n pairs of numbers having the following property: for each pair of two distinct divisors, the reversal of one is equal to the other.
Terms
- a(0) =84a(1) =168a(2) =336a(3) =1008a(4) =3024a(5) =5544a(6) =11088a(7) =16632a(8) =33264a(9) =49896a(10) =99792a(11) =182952a(12) =365904a(13) =249480a(14) =498960a(15) =1097712a(16) =2162160a(17) =3359664a(18) =1846152a(19) =3027024a(20) =5538456a(21) =6054048a(22) =9081072a(23) =9230760a(24) =14270256a(25) =19891872a(26) =20307672a(27) =25197480a(28) =33297264a(29) =45405360
External references
- oeis: A260705