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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A256603 Numbers D such that D^2 = A^3 + B^4 + C^5 has more than one solution in positive integers (A, B, C). 5
 305, 525, 1206, 1257, 1395, 2048, 2213, 3072, 4348, 6400, 16385, 16640, 16704, 20631, 22872, 23256, 30968, 31407, 32769, 62943, 74515, 77713, 77824, 79776, 82565, 84775, 90432, 98739, 117600, 121250, 133696, 163525, 165628, 171576, 198400, 199872, 243225 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A subsequence of A256091. Sequences A256604 and A256652 are the analog for A180241 and A255830. LINKS Chai Wah Wu, Table of n, a(n) for n = 1..185 EXAMPLE (A, B, C) = (32, 128, 1): 32^3 + 128^4 + 1^5 = 32768 + 268435456 + 1 = 268468225 = 16385^2 (A, B, C) = (1, 128, 8): 1^3 + 128^4 + 8^5 = 1 + 268435456 + 32768 = 268468225 = 16385^2 so 16385 is a term. PROG (PARI) for(D=1, 9999, f=-1; for(C=1, sqrtn(D^2-1, 5), for(B=1, sqrtn(D^2-C^5-.5, 4), ispower(D^2-C^5-B^4, 3)&&f++&print1(D", ")+next(3)))) CROSSREFS Cf. A180241, A180242, A255830, A256091, A256604, A256613, A256652. Sequence in context: A221117 A216260 A160577 * A058828 A350397 A247344 Adjacent sequences:  A256600 A256601 A256602 * A256604 A256605 A256606 KEYWORD nonn AUTHOR M. F. Hasler, Apr 06 2015 EXTENSIONS Inserted a(11),a(16) and added a(19)-a(37) by Lars Blomberg, Apr 17 2015 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 May 18 10:28 EDT 2022. Contains 353807 sequences. (Running on oeis4.)