A064318 a(n) satisfies a(n)! <= n^n < (a(n)+1)!.

1, 1, 2, 4, 5, 6, 8, 9, 10, 11, 13, 14, 15, 16, 18, 19, 20, 21, 23, 24, 25, 26, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 64, 65, 66, 67, 68, 70, 71, 72, 73, 74, 75, 77, 78, 79, 80, 81, 83, 84, 85, 86

Offset

0,3

Links

Harry J. Smith, Table of n, a(n) for n = 0..1000

Example

a(5)=6 since 6! = 720 <= 5^5 = 3125 < 7! = 5040.

Prog

(PARI) { a=1; for (n=0, 1000, p=n^n; if (n>1, a++); until (a! > p, a++); a--; write("b064318.txt", n, " ", a) ) } \\ Harry J. Smith, Sep 11 2009

Crossrefs

Cf. A000142, A000312, A064317.

Sequence in context: A039138 A285670 A030124 * A286924 A039100 A184482

Adjacent sequences: A064315 A064316 A064317 * A064319 A064320 A064321

Keyword

nonn

Author

Henry Bottomley, Sep 10 2001

Status

approved