Indices of decagonal numbers that are also heptagonal.
A203410
Indices of decagonal numbers that are also heptagonal.
Terms
- a(0) =1a(1) =12a(2) =850a(3) =16761a(4) =1225159a(5) =24168810a(6) =1766677888a(7) =34851406719
External references
- oeis: A203410