Numbers k such that the sum of all proper substrings of their decimal representation equals the reverse of k.

A162467

Numbers k such that the sum of all proper substrings of their decimal representation equals the reverse of k.

Terms

    a(0) =0a(1) =10a(2) =20a(3) =30a(4) =40a(5) =50a(6) =60a(7) =70a(8) =80a(9) =90a(10) =891a(11) =941a(12) =2931a(13) =51070a(14) =147970a(15) =1330550a(16) =1523870a(17) =75914061a(18) =30735249050a(19) =32036090950a(20) =90000000001a(21) =575605978451a(22) =922898423231

External references