Search: id:A002438
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%I A002438 M4029 N1672
%S A002438 1,5,205,22265,4544185,1491632525,718181418565,476768795646785,
%T A002438 417370516232719345,465849831125196593045,645702241048404020542525
%N A002438 Multiples of Euler numbers.
%D A002438 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A002438 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A002438 Glaisher, J. W. L.; Messenger of Math., 28 (1898), 36-79, see esp. p. 
               51.
%D A002438 A. Fletcher, J. C. P. Miller, L. Rosenhead and L. J. Comrie, An Index 
               of Mathematical Tables. Vols. 1 and 2, 2nd ed., Blackwell, Oxford 
               and Addison-Wesley, Reading, MA, 1962, Vol. 1, p. 75.
%F A002438 A000364(n) * (3^(2n)+1)/2.
%F A002438 a(n+1) = Sum_{k, 0<=k<=n} A086646(n, k)*(-4)^k*9^(n-k). - Philippe DELEHAM 
               (kolotoko(AT)wanadoo.fr), Aug 26 2005
%Y A002438 Sequence in context: A128678 A012811 A060486 this_sequence A005333 A162087 
               A068531
%Y A002438 Adjacent sequences: A002435 A002436 A002437 this_sequence A002439 A002440 
               A002441
%K A002438 nonn,easy,nice
%O A002438 1,2
%A A002438 N. J. A. Sloane (njas(AT)research.att.com).
%E A002438 More terms from H. P. Robinson.

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