OFFSET
1,2
REFERENCES
F. N. David, M. G. Kendall and D. E. Barton, Symmetric Function and Allied Tables, Cambridge, 1966, p. 228.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Colin Barker, Table of n, a(n) for n = 1..481
Mircea Merca, Some experiments with complete and elementary symmetric functions, Periodica Mathematica Hungarica, 69 (2014), 182-189.
Index entries for linear recurrences with constant coefficients, signature (274,-27000,1224000,-25920000,207360000).
FORMULA
G.f.: x / ((1-24*x)*(1-30*x)*(1-40*x)*(1-60*x)*(1-120*x)).
a(n) = (1/24) (24^n - 4*30^n + 6*40^n - 4*60^n + 120^n).
PROG
(PARI) Vec(1/(-207360000*x^5+25920000*x^4-1224000*x^3+27000*x^2-274*x+1) + O(x^100)) \\ Colin Barker, Apr 26 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
Formulae and more terms from Ralf Stephan, Feb 20 2005
STATUS
approved