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A048478
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a(n) = T(6,n), array T given by A048472.
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1
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1, 8, 29, 85, 225, 561, 1345, 3137, 7169, 16129, 35841, 78849, 172033, 372737, 802817, 1720321, 3670017, 7798785, 16515073, 34865153, 73400321, 154140673, 322961409, 675282945, 1409286145, 2936012801, 6106906625, 12683575297
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OFFSET
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0,2
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..1000
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FORMULA
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a(n) = 7*n * 2^(n-1) + 1.
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PROG
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(MAGMA) [7*n * 2^(n-1) + 1: n in [0..30]]; // Vincenzo Librandi, Sep 23 2011
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CROSSREFS
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n-th difference of a(n), a(n-1), ..., a(0) is (7, 14, 21, ...).
Sequence in context: A046664 A055536 A131438 * A001360 A116952 A199207
Adjacent sequences: A048475 A048476 A048477 * A048479 A048480 A048481
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KEYWORD
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nonn,easy
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AUTHOR
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Clark Kimberling
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STATUS
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approved
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