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 A261143 a(n) = H_n(1,2) where H_n is the n-th hyperoperator. 3
 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS See A054871 for definitions and key links. Sequence is also the decimal expansion of 2989/9000. LINKS EXAMPLE a(0) = H_0(1,2) = 2+1 = 3; a(1) = H_1(1,2) = 1+2 = 3; a(2) = H_2(1,2) = 1*2 = 2; a(3) = H_3(1,2) = 1^2 = 1; a(4) = H_4(1,2) = 1^^2 = 1. CROSSREFS Cf. A054871. Sequence in context: A097278 A254411 A056223 * A100013 A065744 A016455 Adjacent sequences:  A261140 A261141 A261142 * A261144 A261145 A261146 KEYWORD nonn,cons AUTHOR Natan Arie Consigli, Aug 24 2015 STATUS approved

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Last modified September 28 18:04 EDT 2021. Contains 347716 sequences. (Running on oeis4.)