A061751 Numbers k such that k! is divisible by (k+1)^3.
11, 17, 19, 23, 26, 27, 29, 31, 34, 35, 39, 41, 43, 44, 47, 48, 49, 51, 53, 54, 55, 59, 62, 63, 64, 65, 67, 69, 71, 74, 75, 76, 77, 79, 80, 83, 84, 87, 89, 90, 91, 94, 95, 97, 98, 99, 101, 103, 104, 107, 109, 111, 113, 114, 115, 116, 118, 119, 120, 123, 124, 125, 127
Offset: 1
Keywords
Links
- Harry J. Smith, Table of n, a(n) for n = 1..2000
Programs
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Mathematica
Select[Range[150], IntegerQ[ #!/(# + 1)^3] &]
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PARI
{ n=0; f=1; for (a=1, 2784, f*=a; if (f%(a + 1)^3 == 0, write("b061751.txt", n++, " ", a)) ) } \\ Harry J. Smith, Jul 27 2009