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 A242657 Mahonian numbers T(n,7) (cf. A008302). 1
 15, 101, 359, 961, 2191, 4489, 8504, 15159, 25728, 41926, 66013, 100913, 150349, 218995, 312646, 438407, 604902, 822504, 1103587, 1462801, 1917371, 2487421, 3196324, 4071079, 5142716, 6446730, 8023545, 9919009, 12184921, 14879591, 18068434, 21824599, 26229634, 31374188, 37358751, 44294433, 52303783, 61521649 (list; graph; refs; listen; history; text; internal format)
 OFFSET 5,1 COMMENTS 45 years ago this was A000712, but it was dropped during the preparation of the 1973 Handbook of Integer Sequences. LINKS MAPLE g := proc(n, k) option remember; if k=0 then return(1) else if (n=1 and k=1) then return(0) else if (k<0 or k>binomial(n, 2)) then return(0) else g(n-1, k)+g(n, k-1)-g(n-1, k-n) end if end if end if end proc; [seq(g(n, 7), n=5..40)]; CROSSREFS Cf. A008302. Sequence in context: A034266 A087661 A319777 * A163717 A111370 A093739 Adjacent sequences:  A242654 A242655 A242656 * A242658 A242659 A242660 KEYWORD nonn AUTHOR N. J. A. Sloane, May 30 2014 STATUS approved

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Last modified July 6 05:39 EDT 2022. Contains 355108 sequences. (Running on oeis4.)