The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A184763 Irregular triangle in which row n has the values of k>n such that Sum_{i=n..k} i^2 is a square. 9
 24, 4, 580, 963, 29, 39, 56, 190, 2215, 32, 552057, 22908, 108, 111, 326, 39, 5345, 28, 21, 43, 308, 1221044, 116, 80, 6910, 48, 50, 73, 578, 624, 3625, 21624, 59, 364, 77, 123, 198, 609, 4087, 61281, 148856, 48, 96, 349, 686, 11918, 67, 93, 171, 15674, 147, 389, 3533, 2132, 92, 3238, 305, 282, 928, 116, 8516, 194, 22873, 36554, 99, 276, 26003, 136, 332 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Sequence A184762 gives the length of row n. A180442 lists the nonempty rows. REFERENCES See A180442. LINKS Table of n, a(n) for n=1..69. Jon E. Schoenfield, List of all integer solutions (i.e., triples (n, k, m) where k > n and Sum_{i=n..k} i^2 = m^2) for n in 1..460 (includes a derivation of the elliptic curves and Magma code used to find the solutions) EXAMPLE The triangle is (row 1) 24 (row 3) 4, 580, 963 (row 7) 29, 39, 56, 190, 2215 (row 9) 32, 552057 (row 11) 22908 (row 13) 108 (row 15) 111, 326 CROSSREFS Cf. A184885 (number of squares in each sum), A184886 (sqrt of sums). Sequence in context: A040562 A267285 A040563 * A107674 A040560 A040558 Adjacent sequences: A184760 A184761 A184762 * A184764 A184765 A184766 KEYWORD nonn,hard,tabf AUTHOR T. D. Noe, Jan 21 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 21 02:16 EDT 2024. Contains 374462 sequences. (Running on oeis4.)