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A094271 First column of triangle A094270. Equals A094272(n)-(n-1). 5

%I

%S 1,2,4,7,12,47,1170,687371,236241851618,

%T 2197451321740962081109754668237121,

%U 2414396155710550624720051944524837499100253655538086242554948251365

%N First column of triangle A094270. Equals A094272(n)-(n-1).

%H Martin Fuller, <a href="/A094271/b094271.txt">Table of n, a(n) for n = 1..12</a>

%F a(n)=A094270(n,1). - _R. J. Mathar_, Jun 23 2006

%e Product of the terms of the 4th row = 7*8*9*10 = 5040. Product of the terms of the 5th row = 12*13*14*15*16 = 524160 = 104*5040.

%Y Cf. A094270, A094272, A094273, A094274.

%K nonn

%O 1,2

%A _Amarnath Murthy_, Apr 27 2004

%E More terms from _R. J. Mathar_, Jun 23 2006

%E Edited by _Martin Fuller_, Jun 13 2007

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Last modified May 16 05:18 EDT 2022. Contains 353693 sequences. (Running on oeis4.)