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Search: id:A132079
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| 4, 14, 64, 314, 1564, 7814, 39064, 195314, 976564, 4882814
(list; graph; listen)
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OFFSET
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4,1
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COMMENT
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(5^n+3)/2 is always divisible by 2 and the next value can be generated by appending 4 at one's place and adding the rest of the number with the respective power of 5 . For example 314 can be generated after 64 by just writing 4 at ones place and adding 5^2 to 6 to get 31 and appending 31 to 4, to get 314.
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EXAMPLE
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a(5) = ((5*5*5*5*5) + 3)/2 = 1564
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MAPLE
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//This is a program for generating first 1000 values of the sequence int n; for(int i=1; i<=1000; i++) { n = (Math.pow(5, i)+3)/2; System.out.printf("%d ", n); }
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CROSSREFS
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Sequence in context: A149494 A149495 A137956 this_sequence A154407 A020041 A081891
Adjacent sequences: A132076 A132077 A132078 this_sequence A132080 A132081 A132082
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KEYWORD
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easy,nonn
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AUTHOR
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Mohit Maheshwari (mohitmahe1989(AT)gmail.com), Oct 30 2007
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