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Search: id:A135162
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| A135162 |
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7^n-5^n-3^n+2^n. Constants are the prime numbers in decreasing order. |
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+0
1
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OFFSET
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0,3
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FORMULA
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a(n)=7^n-5^n-3^n+2^n.
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EXAMPLE
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a(4)=1711 because 7^4=2401, 5^4=625, 3^4=81, 2^4=16 and we can write 2401-625-81+16=1711.
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CROSSREFS
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Cf. A000079, A000244, A000351, A000420, A001047, A074527, A007689, A135158, A135159, A135160.
Adjacent sequences: A135159 A135160 A135161 this_sequence A135163 A135164 A135165
Sequence in context: A058370 A066007 A147830 this_sequence A067272 A037071 A065582
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KEYWORD
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easy,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Nov 21 2007
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