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 A121088 Number of primitive Pythagorean-like triples a^2+b^2=c^2+k for k=5 with 0
 1, 20, 202, 2046, 20589, 205489, 2055224, 20551650, 205500435 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE a(1)=1 because there is one solution (a,b,c) as (4,5,6) with 0aa+1]; fax = Ceiling[Apply[Times, fax]/2]; total += fax; , {c, m}]; total] CROSSREFS Cf. A101931, A121082, A121083, A121084, A121085, A121086, A121087 Sequence in context: A223753 A099197 A041766 * A302838 A302921 A325474 Adjacent sequences:  A121085 A121086 A121087 * A121089 A121090 A121091 KEYWORD more,nonn AUTHOR Tito Piezas III, Aug 11 2006 EXTENSIONS First few terms found by Tito Piezas III, James Waldby (j-waldby(AT)pat7.com) Subsequent terms found by Andrzej Kozlowski (akoz(AT)mimuw.edu.pl), Daniel Lichtblau (danl(AT)wolfram.com) a(6) corrected and a(7) added by Max Alekseyev, Jul 04 2011 a(8)-a(9) from Lars Blomberg, Dec 22 2015 STATUS approved

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Last modified December 15 17:03 EST 2019. Contains 330000 sequences. (Running on oeis4.)