zhè / ge / shù / liè / de / qián / shí / xiàng / zhī / hé / shì / duō / shǎo / ？ / nǐ / néng / suàn / chū / lái / ma / ？

这个数列的前十项之和是多少？你能算出来吗？

What is the sum of the first ten terms of this sequence? Can you calculate it?