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Search: id:A052348
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| A052348 |
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Indices of A052343 (ways to write n as sum of two triangular numbers) where record values are reached. |
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+0
8
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| 0, 6, 81, 276, 1056, 1381, 6906, 17956, 34531, 40056, 200281, 520731, 1001406, 1482081, 7410406, 19267056, 37052031, 60765331, 303826656, 789949306, 1519133281, 3220562556, 13429138206, 16102812781, 41867313231, 80514063906
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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The College Mathematics Journal Vol. 30 No. 5, Nov. 1999 Problem 665.
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EXAMPLE
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a(2) = 6 because 6 = 6 + 0 = 3 + 3. a(3) = 81 because 81 = 3 + 78 = 15 + 66 = 36 + 55.
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CROSSREFS
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Probably differs from A053587 only at n=1, 2, 4. Cf. A000217, A052343-A052347.
Sequence in context: A132616 A077393 A002676 this_sequence A064341 A052756 A138457
Adjacent sequences: A052345 A052346 A052347 this_sequence A052349 A052350 A052351
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KEYWORD
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nonn
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AUTHOR
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Christian G. Bower (bowerc(AT)usa.net), Jan 23 2000
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EXTENSIONS
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a(23)-a(26) from Donovan Johnson (donovan.johnson(AT)yahoo.com), May 24 2009
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