1; 6; 28; 145; 876; 6139; 49120; 392968; 3929690; ...
Пошаговое объяснение:
1; 6; 28; 145;
x₁ = 1
x₂ = (x₁+1) · 3 = 6
x₃ = (x₂+1) · 4 = 28
x₄ = (x₃+1) · 5 = 145
x₅ = (x₄+1) · 6 = (145+1) · 6 = 146 · 6 = 876
x₆ = (x₅+1) · 7 = (876+1) · 7 = 877 · 7 = 6139
x₇ = (x₆+1) · 8 = (6139+1) · 8 = 6140 · 8 = 49120
x₈ = (x₇+1) · 9 = (49120+1) · 8 = 49121 · 8 = 392968
x₉ = (x₈+1) · 10 = (392968+1) · 10 = 392969 · 10 = 3929690
а дальше самостоятельно
x₁₀ = (x₉+1) · 11 = ...
x₁₁ = (x₁₀+1) · 12 = ...
