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A019514 (n!)^3 + 1. 1
2, 2, 9, 217, 13825, 1728001, 373248001, 128024064001, 65548320768001, 47784725839872001, 47784725839872000001, 63601470092869632000001, 109903340320478724096000001, 241457638684091756838912000001 (list; graph; refs; listen; history; text; internal format)



Since this is a sum of two cubes, it can be factorized. So all terms are divisible by n!+1. Thus only two primes occur in this sequence: a(0) and a(1). - Dmitry Kamenetsky, Sep 30 2008


M. Le, On the Interesting Smarandache Product Sequences, Smarandache Notions Journal, Vol. 9, No. 1-2, 1998, 133-134.

M. Le, The Primes in Smarandache Power Product Sequences, Smarandache Notions Journal, Vol. 9, No. 1-2, 1998, 96-97.

F. Iacobescu, Smarandache Partition Type and Other Sequences, Bull. Pure Appl. Sciences, Vol. 16E, No. 2 (1997), pp. 237-240.


Table of n, a(n) for n=0..13.

F. Smarandache, Collected Papers, Vol. II

F. Smarandache, Sequences of Numbers Involved in Unsolved Problems.

Eric Weisstein's World of Mathematics, Factorial

Eric Weisstein's World of Mathematics, Smarandache Sequences


Sequence in context: A205390 A204265 A081086 * A135816 A157341 A038036

Adjacent sequences:  A019511 A019512 A019513 * A019515 A019516 A019517




R. Muller



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Last modified December 19 07:22 EST 2014. Contains 252186 sequences.