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%I #10 Jul 01 2018 16:27:38
%S 11,14,15,17,19,20,23,24,26,27,29,31,32,34,35,38,39,41,43,44,47,48,49,
%T 50,51,53,54,55,56,59,62,63,64,65,67,68,69,71,74,75,76,77,79,80,83,84,
%U 86,87,89,90,91,92,94,95,97,98,99,101,103,104,107,109,110,111,113,114
%N Numbers k such that k! is divisible by (k+1)^2.
%H Harry J. Smith, <a href="/A061743/b061743.txt">Table of n, a(n) for n = 1..2000</a>
%t Select[Range[120], IntegerQ[ #!/(# + 1)^2] &]
%o (PARI) { n=0; f=1; for (a=1, 2588, f*=a; if (f%(a + 1)^2 == 0, write("b061743.txt", n++, " ", a)) ) } \\ _Harry J. Smith_, Jul 27 2009
%o (PARI) isok(k) = !(k! % (k+1)^2); \\ _Michel Marcus_, Jul 01 2018
%Y Cf. A060462.
%K nonn
%O 1,1
%A _Robert G. Wilson v_, Jun 21 2001
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