History of Hindu Mathematics: A Source Book v1.c8.s7.t1.19

v1.c8.s7.t1.19

“In the series, wherein one is the first term as well as the common difference and the number of terms is equal to the given number (n), multiply the preceding term by the immediately following one. The sum of the products so obtained, when multiplied by three and added to the last term (*i.e.*, n) becomes the cube (of n).”