Find the next term in given series. 2, 5, 10, 17, 26, ?

35 36 37 47

37

2, 5, 10, 17, 26, ? The pattern followed is = 1 = 12 + 1 5 = 22 + 1 10 = 32 + 1 17 = 42 + 1 26 = 52 + 1 x = 62 + 1 x = 37