login
Squares of primes mod 100.
0

%I #13 Aug 31 2013 02:30:41

%S 1,4,9,21,25,29,41,49,61,69,81,89

%N Squares of primes mod 100.

%C a(n) is the complete list of the last two digits of terms in A001248, with leading zeros omitted.

%C Numbers 4 and 25 appear only once as the squares of 2 and 5 respectively.

%C This leaves only 10 different digit pairs that recur in A001248.

%C Contrast with A010461 which has 22 different values for the squares of the integers (see A000290), all of which recur.

%C Nearly identical to A210251, for the squares of odd numbers.

%Y Cf. A001248, A000290.

%K nonn,base,full,fini

%O 1,2

%A _Richard R. Forberg_, Aug 28 2013