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A022355
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Fibonacci sequence beginning 0 21.
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1
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0, 21, 21, 42, 63, 105, 168, 273, 441, 714, 1155, 1869, 3024, 4893, 7917, 12810, 20727, 33537, 54264, 87801, 142065, 229866, 371931, 601797, 973728, 1575525, 2549253, 4124778, 6674031, 10798809
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Tanya Khovanova, Recursive Sequences
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FORMULA
| G.f.: 21*x/(1-x-x^2). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 20 2008]
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MATHEMATICA
| a={}; b=0; c=21; AppendTo[a, b]; AppendTo[a, c]; Do[b=b+c; AppendTo[a, b]; c=b+c; AppendTo[a, c], {n, 4!}]; a [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 17 2008]
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CROSSREFS
| Sequence in context: A158772 A151910 A040421 * A048245 A056485 A056475
Adjacent sequences: A022352 A022353 A022354 * A022356 A022357 A022358
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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