[seqfan] p = (k + 1)^2 - k = (m + 1)^3 - m and p = (k + 1)^2 + k = (m + 1)^2 + m

[юрий герасимов]

Dear SeqFans, 

p = (k + 1)^2 - k = (m + 1)^3 - m:

7 = (2 + 1)^2 - 2 = (1 + 1)^3 - 1,

211 = (14 + 1)^2 -14 = (5 + 1)^3 - 5, 

What is the next one?

p = (k + 1)^2 + k = (m + 1)^3 + m: 

29 = (4 + 1)^2 + 4 = (2 + 1)^3 + 2, 

What is the next one? 

Best regards, 

JSG