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 A255420 Ludic recurrence: Iterates of f(n) = A003309(n+1) starting from n=1. 3
 1, 2, 3, 5, 11, 37, 181, 1361, 13927, 183871, 3005533, 59045717 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Donovan Johnson, Ludic numbers computed up to A003309(1236290) = 23000711 FORMULA a(0) = 1; for n >= 1: a(n) = A003309(1+a(n-1)). Other identities. For all n >= 0: a(n) = A237126(A000225(n+1)). a(n) = A255421(A007097(n)). PROG (Scheme, with memoization-macro definec) (definec (A255420 n) (if (zero? n) 1 (A003309 (+ 1 (A255420 (- n 1)))))) (Haskell) a255420 n = a255420_list !! n a255420_list = iterate (a003309 . (+ 1)) 1 -- Reinhard Zumkeller, Feb 25 2015 CROSSREFS Cf. A000225, A003309, A007097, A237126, A255421. Sequence in context: A065510 A006721 A111289 * A127181 A323611 A113734 Adjacent sequences:  A255417 A255418 A255419 * A255421 A255422 A255423 KEYWORD nonn,more AUTHOR Antti Karttunen, Feb 23 2015 STATUS approved

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Last modified October 17 14:39 EDT 2019. Contains 328114 sequences. (Running on oeis4.)