The sum of the first n terms of the sequence is the concatenation of the first n digits of the sequence, and a(1) = 7.
A299870
The sum of the first n terms of the sequence is the concatenation of the first n digits of the sequence, and a(1) = 7.
Terms
- a(0) =7a(1) =70a(2) =693a(3) =6936a(4) =69363a(5) =693624a(6) =6936243a(7) =69362433a(8) =693624324a(9) =6936243243a(10) =69362432430a(11) =693624324303
External references
- oeis: A299870