Sum of piles of first n primes: a(n) = Sum(prime(i)*(2*i-1): 1<=i<=n).

Terms

a(0) =2a(1) =11a(2) =36a(3) =85a(4) =184a(5) =327a(6) =548a(7) =833a(8) =1224a(9) =1775a(10) =2426a(11) =3277a(12) =4302a(13) =5463a(14) =6826a(15) =8469a(16) =10416a(17) =12551a(18) =15030a(19) =17799a(20) =20792a(21) =24189a(22) =27924a(23) =32107a(24) =36860a(25) =42011a(26) =47470a(27) =53355a(28) =59568a(29) =66235