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Search: id:A066912
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| A066912 |
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Fourth column of the Eulerian triangle A008292 in square array format. |
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+0
2
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| 0, 1, 26, 302, 2416, 15619, 88234, 455192, 2203488, 10187685, 45533450, 198410786, 848090912, 3572085255, 14875399450, 61403313100, 251732291184, 1026509354985, 4168403181210, 16871482830550, 68111623139600
(list; graph; listen)
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OFFSET
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0,3
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FORMULA
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4^(n+3)-(n+4)*3^(n+3)+1/2*(n+3)*(n+4)*2^(n+3)-1/6*(n+2)*(n+3)*(n+4)
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PROGRAM
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(PARI) a(n)=4^(n+3)-(n+4)*3^(n+3)+1/2*(n+3)*(n+4)*2^(n+3)-1/6*(n+2)*(n+3)*(n+4)
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CROSSREFS
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Essentially the same as A000498.
Sequence in context: A022718 A014472 A000498 this_sequence A015800 A030647 A010942
Adjacent sequences: A066909 A066910 A066911 this_sequence A066913 A066914 A066915
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KEYWORD
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nonn
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AUTHOR
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Randall L. Rathbun, Jan 22 2002
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org), Jun 11 2002
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