Numbers n such that for some k there exist k numbers a1,a2, ...,ak that concatenations of them is equal to n and sum of them is equal to Pi(n).
A097222
Numbers n such that for some k there exist k numbers a1,a2, ...,ak that concatenations of them is equal to n and sum of them is equal to Pi(n).
Terms
- a(0) =15a(1) =27a(2) =39a(3) =130a(4) =131a(5) =252a(6) =370a(7) =489a(8) =1195a(9) =2345a(10) =3484a(11) =4619a(12) =5752a(13) =6879
External references
- oeis: A097222