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 A075162 Position of A014486(n) in A075165, minus one. 5
 0, 1, 2, 3, 4, 5, 8, 7, 15, 6, 9, 14, 11, 23, 24, 17, 26, 31, 63, 80, 511, 255, 65535, 10, 13, 20, 19, 39, 34, 29, 44, 47, 95, 134, 767, 383, 98303, 48, 49, 74, 35, 71, 124, 53, 242, 127, 1023, 728, 32767, 4095, 16777215, 624, 161, 19682, 33554431, 262143, 6560 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS See A075166. LINKS A. Karttunen, Alternative Catalan Orderings (with the complete Scheme source) PROG (Scheme functions showing the essential idea. For the complete source, follow the "Alternative Catalan Orderings" link:) (define (A075162 n) (-1+ (parenthesization->primefactorization (binexp->parenthesization (A014486 n))))) (define (parenthesization->primefactorization p) (Nvector->primefactorization! (map parenthesization->primefactorization p))) (define (Nvector->primefactorization! el) (let loop ((el (reverse! el)) (i 1) (z 1)) (cond ((null? el) z) ((null? (cdr el)) (* (expt (A008578 i) (car el)) z)) (else (loop (cdr el) (1+ i) (* (expt (A008578 i) (-1+ (car el))) z)))))) CROSSREFS Inverse of A075161. a(n) = A075164(n+1)-1. Cf. A075157, A075169. Sequence in context: A091893 A074756 A240221 * A056240 A069968 A298882 Adjacent sequences:  A075159 A075160 A075161 * A075163 A075164 A075165 KEYWORD nonn AUTHOR Antti Karttunen, Sep 13 2002 STATUS approved

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Last modified January 19 20:33 EST 2019. Contains 319310 sequences. (Running on oeis4.)