A166329 Products of squares of 2 successive primes.

36, 225, 1225, 5929, 20449, 48841, 104329, 190969, 444889, 808201, 1315609, 2301289, 3108169, 4084441, 6205081, 9778129, 12952801, 16703569, 22629049, 26863489, 33258289, 42994249, 54567769, 74528689, 95981209, 108222409

Offset: 1

Author

Vladimir Joseph Stephan Orlovsky, Oct 11 2009

Keywords

• nonn
• easy

Examples

			2^2*3^2 = 36, 3^2*5^2 = 225, 5^2*7^2 = 1225, ..
		

Links

• G. C. Greubel, Table of n, a(n) for n = 1..5000

Crossrefs

Cf. A006094, A152241.

Programs

Magma

[NthPrime(n)^2*NthPrime(n+1)^2: n in [1..30]]; // Vincenzo Librandi, May 10 2016

Mathematica

Array[Prime[ # ]*Prime[ # ]*Prime[ #+1]*Prime[ #+1]&,5! ]
Times@@@(Partition[Prime[Range[30]],2,1]^2) (* Harvey P. Dale, Apr 12 2018 *)

PARI

a(n) = prime(n)^2*prime(n+1)^2; \\ Michel Marcus, May 10 2016

Formula

a(n) = A006094(n)^2. - Michel Marcus, May 10 2016

Extensions

Edited by N. J. A. Sloane, Oct 13 2009