What's the next number?1, 5, 32, 288, 3413, 50069, ...

Answer 1

1^1=1

1^1 + 2^2=5

1^1 + 2^2 + 3^3 =32

1^1 + 2^2 + 3^3 + 4^4 =288

1^1 + 2^2 + 3^3 +4^4 +5^5==3413

1^1 + 2^2 + 3^3 + 4^4 + 5^5 + 6^6=50069

1^1 + 2^2 + 3^3 + 4^4 + 5^5 + 6^6 + 7^7=873612