A355095 - OEIS

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A355095

Taxicab numbers (sums of 2 cubes in more than 1 way) which are products of five distinct primes.

16387189, 16776487, 17045567, 24767171, 38253878, 39639691, 40183262, 41892515, 44409995, 51278929, 60271939, 73842713, 106496767, 122810129, 129380329, 145908847, 154245637, 156234169, 176427433, 197842337, 243578881, 271688534, 272264167, 292940137, 300694303, 373333697, 389675503, 401947273

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OFFSET

1,1

COMMENTS

A squarefree subsequence of taxicab numbers.

LINKS

David A. Corneth, Table of n, a(n) for n = 1..3057 (terms <= 10^13)

Eric Weisstein's World of Mathematics, Taxicab Number

EXAMPLE

16387189 = 5^3 + 254^3 = 197^3 + 206^3 = 7*13*31*37*157.

38253878 = 87^3 + 335^3 = 173^3 + 321^3 = 2*13*19*211*367.

44409995 = 138^3 + 347^3 = 176^3 + 339^3 = 5*7*97*103*127.

CROSSREFS

Intersection of A001235 and A046387.

Sequence in context: A253716 A216004 A155949 * A192203 A248204 A365812

Adjacent sequences: A355092 A355093 A355094 * A355096 A355097 A355098

KEYWORD

nonn

AUTHOR

Massimo Kofler, Jun 19 2022

STATUS

approved