Numbers n such that the sum of the pentagonal numbers P(n) and P(n+1) is equal to the heptagonal number H(m) for some m.
A252585
Numbers n such that the sum of the pentagonal numbers P(n) and P(n+1) is equal to the heptagonal number H(m) for some m.
Terms
- a(0) =3a(1) =234a(2) =1617a(3) =112948a(4) =779551a(5) =54440862a(6) =375742125a(7) =26240382696a(8) =181106924859
External references
- oeis: A252585