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Search: id:A048507
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| 1, 10, 35, 101, 269, 685, 1693, 4093, 9725, 22781, 52733, 120829, 274429, 618493, 1384445, 3080189, 6815741, 15007741, 32899069, 71827453, 156237821, 338690045, 731906045, 1577058301, 3388997629, 7264534525, 15535702013
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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(n^2+9n+16) * 2^(n-2) - 3. - Ralf Stephan, Feb 05 2004
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CROSSREFS
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n-th difference of a(n), a(n-1), ..., a(0) is (9, 16, 25, 36, 49, ...).
Sequence in context: A000447 A052472 A049736 this_sequence A070755 A126995 A000820
Adjacent sequences: A048504 A048505 A048506 this_sequence A048508 A048509 A048510
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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