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 A027638 Order of 2^n X 2^n unitary group H_n acting on Siegel modular forms. 3
 4, 96, 46080, 371589120, 48514675507200, 101643290713836748800, 3409750224676138896064512000, 1830483982118721406049481526345728000, 15723497752907010191583185709179507111362560000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 REFERENCES B. Runge, On Siegel modular forms I, J. Reine Angew. Math., 436 (1993), 57-85. B. Runge, Codes and Siegel modular forms, Discrete Math. 148 (1996), 175-204. LINKS MAPLE 2^(n^2+2*n+2)*product(4^'i'-1, 'i'=1..n); MATHEMATICA Table[2^(n^2+2n+2) Product[4^k-1, {k, n}], {n, 0, 10}] (* Harvey P. Dale, May 21 2018 *) CROSSREFS Equals A003956/2. Cf. A027672. Sequence in context: A181335 A098695 A059201 * A041275 A024384 A180830 Adjacent sequences:  A027635 A027636 A027637 * A027639 A027640 A027641 KEYWORD nonn,easy,nice AUTHOR STATUS approved

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Last modified August 18 08:34 EDT 2018. Contains 313823 sequences. (Running on oeis4.)