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 A196122 Positive integers a for which there is a primitive 4-Pythagorean triple (a,b,c) satisfying a<=b. 4
 3, 4, 5, 7, 7, 8, 9, 11, 11, 12, 13, 13, 15, 16, 16, 17, 17, 19, 19, 20, 20, 20, 21, 23, 23, 24, 25, 25, 28, 28, 28, 29, 31, 32, 32, 35, 36, 37, 40, 41, 43, 44, 44, 44, 51, 52, 52, 52, 55, 56, 57, 60, 64, 65, 68, 68, 69, 72, 75, 76, 85, 87, 88, 91, 92, 93, 95 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences. LINKS Table of n, a(n) for n=1..67. EXAMPLE Primitive 4-Pythagorean triples a,b,c; c^2=a^2+b^2+k*a*b, where k=4: 3,8,13 4,5,11 5,28,37 7,12,23 7,60,73 8,33,47 9,104,121 11,40,59 11,160,181 12,85,107 MATHEMATICA (See A196119.) CROSSREFS Cf. A195770, A196119, A196123, A196124. Sequence in context: A056190 A202702 A049465 * A247140 A269304 A071054 Adjacent sequences: A196119 A196120 A196121 * A196123 A196124 A196125 KEYWORD nonn AUTHOR Clark Kimberling, Sep 28 2011 STATUS approved

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Last modified November 30 12:38 EST 2023. Contains 367461 sequences. (Running on oeis4.)