項番号
(n) |
三角数の値 | 階差数列各項の値 |
---|---|---|
1 | 1 | 2 |
2 | 3 | 3 |
3 | 6 | 4 |
4 | 10 | 5 |
5 | 15 | 6 |
6 | 21 | 7 |
7 | 28 | 8 |
8 | 36 | 9 |
9 | 45 | 10 |
10 | 55 | 11 |
11 | 66 | 12 |
・
・ ・ |
・
・ ・ |
・
・ ・ |
\(T_{2}\) | - | \(T_{1}\) | = | \(F_{1}\) | |
\(T_{3}\) | - | \(T_{2}\) | = | \(F_{2}\) | |
\(T_{4}\) | - | \(T_{3}\) | = | \(F_{3}\) | |
・
・ ・ |
|||||
\(T_{n-2}\) | - | \(T_{n-1}\) | = | \(F_{n-1}\) | |
\(T_{n-1}\) | - | \(T_{n}\) | = | \(F_{n}\) | |
\(T_{n}\) | - | \(T_{n-1}\) | = | \(F_{n-1}\) | |
__ | ___ | _ | ___ | _ | ________ |
合計 | \(T_{n}\) | - | 1 | = | \(F_{1}\)+\(F_{2}\)…\(F_{n-1}\) |