Largest concatenation obtained by appending successively to n the least digit that forms a continuous succession of k-digit multiples of k, k=1,2,3,....

A098143

Largest concatenation obtained by appending successively to n the least digit that forms a continuous succession of k-digit multiples of k, k=1,2,3,....

Terms

    a(0) =10200056405a(5) =60000016505a(6) =702000648036a(9) =10200056405a(10) =11a(11) =1200003210a(12) =13a(14) =15a(16) =17a(17) =1800001620a(18) =19

External references