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Search: id:A082187
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| 1, 2, 7, 6, 23, 10, 21, 20, 33, 28, 51, 44, 87, 56, 117, 80, 153, 100, 201, 110, 243, 140, 291, 164, 327, 188, 387, 218, 405, 248, 483, 284, 555, 322, 633, 340, 711, 392, 783, 430, 861, 460, 951, 520, 1029, 550, 1137, 616, 1251, 664, 1335, 718, 1365, 778, 1551
(list; graph; listen)
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OFFSET
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1,2
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MAPLE
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b:= proc(t) option remember; false end: b(1):= true: ncpr:= proc() local i, m; m:= args[1]; for i from 2 to nargs do if igcd (m, args[i])<>1 then RETURN (true) fi od; false end: T:= proc(n, k) option remember; local h, t, l; if n<1 or k<1 or n=1 and k=1 then t:=1 else h:= 1- 2* irem(n+k, 2); l:= T(n-1, k), T(n, k-1), T(n-1, k-1), T(n+h, k-h); for t while b(t) or ncpr(t, l) do od fi; b(t):= true; t end: seq (T(1, k), k=1..60); [From Alois P. Heinz (heinz(AT)hs-heilbronn.de), Oct 07 2009]
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CROSSREFS
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Cf. A082025, A082188, A082189, A082190.
Sequence in context: A089417 A082017 A072985 this_sequence A021365 A155541 A021787
Adjacent sequences: A082184 A082185 A082186 this_sequence A082188 A082189 A082190
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 07 2003
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 06 2006
Edited with further terms and Maple program by Alois P. Heinz (heinz(AT)hs-heilbronn.de), Oct 07 2009
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