Each natural number not equal to 216 can be written in the form p+Tx , where p is 0 or a prime, and Tx=x(x+1)/2 is a triangular number.
Zhi-Wei Sun, 2009
NOTHING IS BIGGER THAN IT LOOKS
NOTHING IS BIGGER THAN IT LOOKS
Each natural number not equal to 216 can be written in the form p+Tx , where p is 0 or a prime, and Tx=x(x+1)/2 is a triangular number.
Zhi-Wei Sun, 2009