Reversal of sigma(n) equals the sum of the reversals of the divisors of n.

A203615

Reversal of sigma(n) equals the sum of the reversals of the divisors of n.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =7a(6) =21a(7) =938a(8) =17797a(9) =44045a(10) =87001a(11) =454085a(12) =2217425a(13) =8156450a(14) =8475789a(15) =3293216050a(16) =11130063842a(17) =44662814795a(18) =77084972662

External references