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 A136000 A010814(n) - 1. 2
 11, 23, 29, 35, 39, 47, 55, 59, 69, 71, 79, 83, 89, 95, 107, 111, 119, 125, 131, 139, 143, 149, 153, 155, 159, 167, 175, 179, 181, 191, 197, 199, 203, 207, 209, 215, 219, 223, 227, 233, 239, 251, 259, 263, 269, 275, 279, 285, 287, 299, 305, 307, 311, 319, 323 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers of the form P-1 in increasing order, where P is the sum of a Pythagorean triple. Also P is the perimeter of a Pythagorean triangle. The open triangle represent a triangle instrument and, in general, any musical instrument. Positive integers are musician numbers or dancer number A136002. LINKS Dallas Symphony Assoc., Dsokids - Triangle instrument. Epsilones, Pythagoras - Music. Ron Knott, Pythagorean Triples and Online Calculators. EXAMPLE a(1)=11 because 3,4,5 is Pythagorean triple and 3+4+5=12 is the sum of a Pythagorean triple and 11+1=12, then we can write 3+4+5=11+1. CROSSREFS Cf. A136001, A136002. Perimeters of Pythagorean triangles: A009096. Sequence in context: A058340 A138537 A271983 * A054723 A109981 A091367 Adjacent sequences:  A135997 A135998 A135999 * A136001 A136002 A136003 KEYWORD nonn AUTHOR Omar E. Pol, Dec 10 2007 EXTENSIONS Definition corrected by R. J. Mathar, Dec 12 2007 Extended by Ray Chandler, Dec 13 2008 STATUS approved

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Last modified January 25 08:59 EST 2022. Contains 350565 sequences. (Running on oeis4.)