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A060242
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(2^n-1)*(4^n-1).
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1
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0, 3, 45, 441, 3825, 31713, 257985, 2080641, 16711425, 133955073, 1072692225, 8585738241, 68702695425, 549688696833, 4397778059265, 35183298314241, 281470681677825, 2251782633684993, 18014329789743105, 144114913197424641
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Harry J. Smith, Table of n, a(n) for n=0,...,100
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PROG
| (PARI) { for (n=0, 100, write("b060242.txt", n, " ", (2^n - 1)*(4^n - 1)); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 04 2009]
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CROSSREFS
| Sequence in context: A073595 A117972 A061532 * A141445 A076140 A131568
Adjacent sequences: A060239 A060240 A060241 * A060243 A060244 A060245
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Mar 22 2001
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