S1:          There is a touching story of Professor Hardy visiting Ramanujan as he lay desperately ill in hospital at Putney. P :           ‘No Hardy, that is not a dull number in the very least. Q :          Hardy, who was a very shy man, could not find the words for his distress. R :          It was 1729. S :           The best he could do, as he got to the beside was “I say Ramanujan, I thought the number of taxi I came down in was a very dull number” S6:          It is the lowest number that can be expressed in two different ways as the sum of two cubes. The Proper sequence should be: