A103390 Natural numbers but with nonprimes squared.

0, 1, 2, 3, 16, 5, 36, 7, 64, 81, 100, 11, 144, 13, 196, 225, 256, 17, 324, 19, 400, 441, 484, 23, 576, 625, 676, 729, 784, 29, 900, 31, 1024, 1089, 1156, 1225, 1296, 37, 1444, 1521, 1600, 41, 1764, 43, 1936, 2025, 2116, 47, 2304, 2401, 2500, 2601, 2704, 53

Offset: 1

Author

Parthasarathy Nambi, Mar 20 2005

Keywords

• easy
• nonn

Examples

			4 is not a prime, so it is squared.
		

Links

• Daniel Starodubtsev, Table of n, a(n) for n = 1..10000
• Peter Alfeld, The 1,000 smallest prime numbers .

Crossrefs

Cf. A103164.

Programs

Mathematica

Table[ If[ PrimeQ[n], n, n^2], {n, 0, 54}] (* Robert G. Wilson v, Mar 24 2005 *)

Extensions

More terms from Robert G. Wilson v, Mar 24 2005