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Search: id:A053677
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| A053677 |
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Let Oc(n) = A005900(n) = n-th octahedral number. Consider all integer triples (i,j,k), j >= k > 0, with Oc(i) = Oc(j)+Oc(k), ordered by increasing i; sequence gives j values. |
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+0
3
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| 6, 40, 454, 2600, 2586, 20175, 48103, 93097, 105805, 265195, 755100, 803007
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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Oc(7) = 231 = Oc(6) + Oc(5); Oc(41) = 45961 = Oc(40) + Oc(17); Oc(465) = 67029905 = Oc(454) + Oc(191)
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CROSSREFS
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i values are A053676 and k values are A053678.
Sequence in context: A000683 A143342 A084270 this_sequence A001367 A096671 A012856
Adjacent sequences: A053674 A053675 A053676 this_sequence A053678 A053679 A053680
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KEYWORD
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nice,nonn
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AUTHOR
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Klaus Strassburger (strass(AT)ddfi.uni-duesseldorf.de), Feb 16 2000
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org), May 07 2001
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