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 A255340 a(n) = H_n(4,3) where H_n is the n-th hyperoperator. 1
 4, 7, 12, 64, 13407807929942597099574024998205846127479365820592393377723561443721764030073546976801874298166903427690031858186486050853753882811946569946433649006084096 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS See A054871 for definitions and key links. LINKS Table of n, a(n) for n=0..4. EXAMPLE a(0) = H_0(4,3) = 3+1 = 4; a(1) = H_1(4,3) = 4+3 = 7; a(2) = H_2(4,3) = 4*3 = 12; a(3) = H_3(4,3) = 4^3 = 64; a(4) = H_4(4,3) = 4^^3 = 4^4^4 = 4^256 = ... ; a(5) = H_5(4,3) = 4^^^3 = 4^^4^^4 = 4^^(4^4^4^4) = 4^^(4^4^256) = ... . CROSSREFS Cf. A054871. Sequence in context: A183336 A102953 A111157 * A272251 A169700 A162957 Adjacent sequences: A255337 A255338 A255339 * A255341 A255342 A255343 KEYWORD nonn AUTHOR Natan Arie Consigli, Apr 18 2015 EXTENSIONS First term corrected and hyperoperator notation implemented by Danny Rorabaugh, Oct 20 2015 STATUS approved

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Last modified July 19 01:31 EDT 2024. Contains 374388 sequences. (Running on oeis4.)