A038855 Numbers that are divisible by 7 and are differences between two cubes in at least one way.
7, 56, 63, 91, 98, 189, 217, 448, 469, 504, 511, 602, 665, 721, 728, 784, 819, 875, 973, 1141, 1197, 1267, 1323, 1330, 1512, 1519, 1603, 1701, 1736, 1946, 1981, 2044, 2072, 2107, 2170, 2401, 2457, 2611, 2646, 2716, 2765, 2863, 3087, 3185, 3311, 3367
Offset: 1
Keywords
Programs
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PARI
v=vector(3367); for(i=1, 33, for(j=i+1, 34, d=j^3-i^3; if(d<=3367, v[d]++, next(2)))); forstep(n=7, 3367, 7, if(v[n]>0, print1(n ", "))) \\ Donovan Johnson, Dec 31 2013
Extensions
2014 changed to 2044 by Donovan Johnson, Dec 31 2013