|
Search: id:A003555
|
|
|
| A003555 |
|
Sum{1,2,...,(10^n - 1)/9}, or (10^n -1)/9)((10^n -1)/9 +1)/2 (n-th term is the middle 2(n-1) digits of the (n+9)-th term for n > 1). |
|
+0
3
|
|
| 1, 66, 6216, 617716, 61732716, 6172882716, 617284382716, 61728399382716, 6172839549382716, 617283951049382716, 61728395066049382716, 6172839506216049382716, 617283950617716049382716
(list; graph; listen)
|
|
|
Search completed in 0.002 seconds
|
