(Translated by https://www.hiragana.jp/)
# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a264994 Showing 1-1 of 1 %I A264994 #10 Dec 13 2015 07:49:32 %S A264994 0,1,2,3,4,5,9,13,8,6,10,14,12,7,11,15,16,17,33,49,20,21,37,53,36,25, %T A264994 41,57,52,29,45,61,32,18,34,50,24,22,38,54,40,26,42,58,56,30,46,62,48, %U A264994 19,35,51,28,23,39,55,44,27,43,59,60,31,47,63,64,65,129,193,68,81,145,209,132,97,161,225,196,113,177,241,80,69 %N A264994 Bijective base-4 reverse: a(0) = 0; for n >= 1, a(n) = A030103(A065883(n)) * A234957(n). %C A264994 Self-inverse permutation of nonnegative integers. %H A264994 Antti Karttunen, Table of n, a(n) for n = 0..16384 %H A264994 Index entries for sequences that are permutations of the natural numbers %F A264994 a(0) = 0; for n >= 1, a(n) = A030103(A065883(n)) * A234957(n). %F A264994 Other identities. For all n >= 0: %F A264994 a(4*n) = 4*a(n). %o A264994 (Scheme) %o A264994 (define (A264994 n) (if (zero? n) n (* (A030103 (A065883 n)) (A234957 n)))) %Y A264994 Cf. A030103, A065883, A234957. %Y A264994 Cf. A264993 (a(3n)/3), A265335 (a(5n)/5). %Y A264994 Cf. also A057889 (base-2), A263273 (base-3), A264995 (base-5), A264979 (base-9). %K A264994 nonn,base %O A264994 0,3 %A A264994 _Antti Karttunen_, Dec 07 2015 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE