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1, 1, 0, -1, 0, 7, 28, 79, 192, 431, 924, 1927, 3952, 8023, 16188, 32543, 65280, 130783, 261820, 523927, 1048176, 2096711, 4193820, 8388079, 16776640, 33553807, 67108188, 134216999, 268434672, 536870071, 1073740924, 2147482687, 4294966272, 8589933503, 17179868028, 34359737143
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,6
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..240
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MAPLE
| seq(2^n-n^2, n=0..35); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jul 01 2007
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MATHEMATICA
| lst={}; Do[AppendTo[lst, (2^n-n^2)], {n, 0, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 15 2009]
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PROG
| (MAGMA) [2^n-n^2: n in [0..30]]; // Vincenzo Librandi, Apr 29 2011
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CROSSREFS
| Cf. A072180, 2^n-n^2 is prime; A075896, primes of the form 2^n-n^2; A099481, 2^n-n^2 is a semiprime; A099482, semiprimes of the form 2^n-n^2.
Sequence in context: A064951 A073995 A061968 * A163705 A162595 A073363
Adjacent sequences: A024009 A024010 A024011 * A024013 A024014 A024015
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KEYWORD
| sign
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Oct 18 2004
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