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A097046
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a(n) = a(n-1) + a(floor(sqrt(n))) for n > 1; a(1) = 1.
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1
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1, 2, 3, 5, 7, 9, 11, 13, 16, 19, 22, 25, 28, 31, 34, 39, 44, 49, 54, 59, 64, 69, 74, 79, 86, 93, 100, 107, 114, 121, 128, 135, 142, 149, 156, 165, 174, 183, 192, 201, 210, 219, 228, 237, 246, 255, 264, 273, 284, 295, 306, 317, 328, 339, 350, 361, 372, 383, 394, 405
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| By definition, this sequence consists of an infinite sequence of finite subsequences of increasing lengths with common differences a(1), a(2), a(3), ..., respectively.
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FORMULA
| a(1)=1; a(n) = a(n-1) + a(floor(sqrt(n))) for n > 1.
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CROSSREFS
| Cf. A097045 ( a(n-1) - a(floor(sqrt(n))) ).
Sequence in context: A033055 A186390 A022554 * A011861 A065520 A180934
Adjacent sequences: A097043 A097044 A097045 * A097047 A097048 A097049
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KEYWORD
| nonn
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AUTHOR
| Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jul 20 2004
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