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1, 3, 9, 8, 5, 15, 7, 2, 6, 18, 16, 10, 11, 14, 4, 12, 17, 13, 1, 3, 9, 8, 5, 15, 7, 2, 6, 18, 16, 10, 11, 14, 4, 12, 17, 13, 1, 3, 9, 8, 5, 15, 7, 2, 6, 18, 16, 10, 11, 14, 4, 12, 17, 13, 1, 3, 9, 8, 5, 15, 7, 2, 6, 18, 16, 10, 11, 14, 4, 12, 17, 13, 1, 3, 9
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(n)= +a(n-1) -a(n-9) +a(n-10). G.f.: (1+2*x+6*x^2-x^3-3*x^4+10*x^5-8*x^6-5*x^7+4*x^8+13*x^9)/ ((1-x) * (1+x) * (x^2 -x+1) * (x^6-x^3+1)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 13 2010]
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PROG
| (Other) sage: [power_mod(3, n, 19)for n in xrange(0, 75)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Nov 25 2009]
(MAGMA) [3^n mod 19: n in [0..90]]; [From Vincenzo Librandi, Feb 06 2011]
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CROSSREFS
| Sequence in context: A200240 A199052 A021255 * A021719 A200346 A199781
Adjacent sequences: A070339 A070340 A070341 * A070343 A070344 A070345
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), May 12 2002
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