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-3, 0, 12, 60, 252, 1020, 4092, 16380, 65532, 262140, 1048572, 4194300, 16777212, 67108860, 268435452, 1073741820, 4294967292, 17179869180, 68719476732, 274877906940, 1099511627772, 4398046511100, 17592186044412, 70368744177660, 281474976710652, 1125899906842620
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| a(n) = A000918(n)*A052548(n). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 14 2009]
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LINKS
| Harry J. Smith, Table of n, a(n) for n=0,...,500
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FORMULA
| a(n) = A000302(n)-4 = 4a(n-1)+12 = 4*A024036(n-1) = 12*A002450(n-1). G.f.: 3*(5x-1)/(1-x)/(1-4x).
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PROG
| (PARI) { f=1; for (n = 0, 500, write("b058896.txt", n, " ", f-4); f*=4; ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 23 2009]
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CROSSREFS
| Cf. A000918, A058809.
Sequence in context: A071534 A135687 A057374 * A008403 A138349 A135399
Adjacent sequences: A058893 A058894 A058895 * A058897 A058898 A058899
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KEYWORD
| easy,sign
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Jan 08 2001
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