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 A249826 Permutation of natural numbers: a(n) = A078898(A003961(A003961(A003961(2*n)))). 6
 1, 2, 3, 14, 4, 21, 5, 92, 33, 25, 6, 144, 7, 32, 39, 641, 8, 226, 9, 170, 50, 36, 10, 1007, 46, 43, 355, 223, 11, 267, 12, 4482, 56, 55, 59, 1582, 13, 58, 68, 1190, 15, 350, 16, 249, 420, 70, 17, 7043, 78, 316, 86, 301, 18, 2485, 66, 1555, 91, 77, 19, 1869, 20, 81, 549, 31374, 80, 391, 22, 379, 109, 413, 23, 11068, 24, 88, 496, 406, 87, 473, 26, 8324, 3905, 99, 27 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Antti Karttunen, Table of n, a(n) for n = 1..127 FORMULA a(n) = A078898(A003961(A003961(A003961(2*n)))). a(n) = A078898(A246278(4,n)). As a composition of other permutations: a(n) = A250476(A249824(n)). a(n) = A250476(A249746(A048673(n))). [Composition of the first three rows of array A251722.] PROG (Scheme) (define (A249826 n) (A078898 (A003961 (A003961 (A003961 (* 2 n)))))) CROSSREFS Inverse: A249825. Row 4 of A249822. Cf. A003961, A251722, A048673, A078898, A246278, A249824, A249746, A250476. Sequence in context: A282658 A287139 A288770 * A321226 A329365 A119616 Adjacent sequences:  A249823 A249824 A249825 * A249827 A249828 A249829 KEYWORD nonn AUTHOR Antti Karttunen, Dec 06 2014 STATUS approved

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Last modified April 6 12:19 EDT 2020. Contains 333273 sequences. (Running on oeis4.)