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 A101755 Indices of highly composite triangular numbers. 4
 1, 2, 3, 7, 8, 15, 24, 32, 35, 63, 80, 104, 224, 384, 560, 935, 1224, 1664, 1728, 2015, 2079, 5984, 12375, 14399, 21735, 41040, 78624, 98175, 123200, 126224, 165375, 201824, 313599, 395199, 453375, 1056159, 1154439, 1324224, 1890944, 2203200, 2756159, 6969599 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Charles R Greathouse IV and Donovan Johnson, Table of n, a(n) for n = 1..70 (first 55 terms from Charles R Greathouse IV). FORMULA A000217(a(n)) = A076711(n). PROG (PARI) r=0; for(n=1, 1e7, t=if(n%2, numdiv(n)*numdiv((n+1)/2), numdiv(n/2)*numdiv(n+1)); if(t>r, r=t; print1(n", "))) \\ Charles R Greathouse IV, Feb 01 2013 CROSSREFS Cf. A076711, A101756. Sequence in context: A071527 A307328 A097095 * A363847 A076550 A062269 Adjacent sequences: A101752 A101753 A101754 * A101756 A101757 A101758 KEYWORD nonn AUTHOR Ray Chandler, Dec 22 2004 STATUS approved

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Last modified October 1 14:39 EDT 2023. Contains 365826 sequences. (Running on oeis4.)