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Search: id:A104743
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| A104743 |
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Numbers m=n+3^n such that equation x=3^(m-x) has solution x=3^n. |
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+0
3
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| 1, 4, 11, 30, 85, 248, 735, 2194, 6569, 19692, 59059, 177158, 531453, 1594336, 4782983, 14348922, 43046737, 129140180, 387420507, 1162261486, 3486784421, 10460353224, 31381059631, 94143178850, 282429536505, 847288609468
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OFFSET
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0,2
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FORMULA
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a(n)=n+3^n, offset=0
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MAPLE
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g:=1/(1-3*z): gser:=series(g, z=0, 43): seq(coeff(gser, z, n)+n, n=0..31); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 09 2009]
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MATHEMATICA
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a=1; lst={a}; Do[a=a*3-n; AppendTo[lst, a], {n, -1, 5!, 2}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 18 2009]
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CROSSREFS
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Cf. A103537.
Sequence in context: A021006 A078141 A090327 this_sequence A165993 A004080 A027115
Adjacent sequences: A104740 A104741 A104742 this_sequence A104744 A104745 A104746
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Mar 23 2005
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EXTENSIONS
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More terms from Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 18 2009
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