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 A055612 a(n) = Product_{m=1..n} (binomial(n,m)+1). 6
 1, 2, 6, 32, 350, 8712, 526848, 80289792, 31428168318, 31906468445000, 84447578671097576, 584524457418427932672, 10604795873304968964262400, 505245441738743508813986275328, 63320582170435750241601032951040000, 20908669294849228879861552351685432573952 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS a(n) = A129824(n) / 2. - Reinhard Zumkeller, Jan 31 2015 REFERENCES V. K. Kharchenko, Fixed rings and noncommutative invariant theory, pp. 359-398 of M. Hazewinkel, ed., Handbook of Algebra, Vol. 2, Elsevier, 2000. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 0..69 MATHEMATICA Array[Product[1 + Binomial[#, m], {m, #}] &, 16, 0] (* Michael De Vlieger, Oct 30 2017 *) PROG (Haskell) a055612 = product . map (+ 1) . tail . a007318_row -- Reinhard Zumkeller, Jan 31 2015 (PARI) a(n) = prod(m=1, n, 1+binomial(n, m)); \\ Michel Marcus, Oct 30 2017 CROSSREFS Cf. A007318, A217716, A293954, A293955. Sequence in context: A172401 A272661 A005742 * A236691 A056642 A001199 Adjacent sequences:  A055609 A055610 A055611 * A055613 A055614 A055615 KEYWORD nonn AUTHOR N. J. A. Sloane, Jun 03 2000 STATUS approved

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Last modified June 15 22:06 EDT 2021. Contains 345053 sequences. (Running on oeis4.)