The superduperfactorial is a superfactorial-based function with differing definitions.[1]

Neil J.A. Sloane and Simon Plouffe define superfactorial as n₫, the product of the first n superfactorials. The first few values of n₫ for n = 1, 2, 3,... are 1, 1, 2, 24, 6912, 238878720, 5944066965504000, 745453331864786829312000000, 3769447945987085350501386572267520000000000, ... (OEIS A055462).

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