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A117534
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Inverse permutation to sequence A117532 (if indeed sequence A117532 is a permutation of the positive integers).
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2
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1, 2, 5, 3, 9, 4, 6, 7, 13, 8, 10, 11, 16, 12, 14, 19, 15, 17, 21, 18, 25, 20, 22, 23, 28, 24, 26, 31, 27, 29, 33, 30, 37, 32, 34, 35, 40, 36, 38, 43, 39, 41, 45, 42, 49, 44, 46, 47, 52, 48, 50, 55, 51, 53, 57, 54, 61, 56, 58, 59, 62, 63, 65, 60, 69, 64, 66, 67, 73, 68, 70, 71
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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MAPLE
| read("transforms") ; A117532 := proc(nmax) local a, n, nxt, asu ; a := [1] ; asu := 1 ; while nops(a) < nmax do n := nops(a)+1 ; nxt := 1 ; while nxt in a or gcd(n, asu+nxt) <> 1 do nxt := nxt+1 ; od ; a := [op(a), nxt] ; asu := asu+nxt ; od ; a ; end: A117532(180) ; INVERSE(%) ; [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 20 2009]
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CROSSREFS
| Cf. A117532, A117533.
Sequence in context: A065222 A159988 A134880 * A112990 A169848 A026201
Adjacent sequences: A117531 A117532 A117533 * A117535 A117536 A117537
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KEYWORD
| nonn
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AUTHOR
| Leroy Quet Mar 26 2006
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EXTENSIONS
| More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 20 2009
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