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Verified answer
Itu lompatnya=1,3,5,7berarti lompat ganjil
un=2n-1
Bab Baris dan Deret
5, 6, 9, 14, 21,...
+1 +3 +5 +7
+2 +2 +2
Un = a + (n - 1)b
Un = 5 + (n - 1)(n - 1)
Un = 5 + n² - n - n + 1
Un = n² - 2n + 6