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 A235399 Numbers which are the digital sum of the cube of some prime. 1
 8, 9, 10, 17, 19, 26, 28, 35, 37, 44, 46, 53, 55, 62, 64, 71, 73, 80, 82, 89, 91, 98, 100, 107, 109, 116, 118, 125, 127, 134, 136, 143, 145, 152, 154, 161, 163, 170, 172, 179, 181, 188, 190, 197, 199, 206, 208, 215, 217, 224, 226, 233, 235, 242, 244, 251, 253 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A235398 sorted and duplicates removed. LINKS FORMULA Conjecture: for n > 4, a(n) = a(n-2) + 9. Conjecture: a(n) = (1/4)*(-1)^n*(9*(-1)^n*(2*n-1) + 5), n >= 3. - Bill McEachen, Feb 13 2021 PROG (PARI) list(maxx)={v=List(); n=2; while(n<=maxx, q=n^3; summ=sumdigits(q); if(setsearch(v, summ)<1, listput(v, summ)); n=nextprime(n+1)); vecsort(v, , 8) ; } \\ Bill McEachen, Jan 29 2014 CROSSREFS Cf. A235398, A004164, A007953, A123157. Sequence in context: A135043 A054966 A130881 * A283628 A343860 A308809 Adjacent sequences:  A235396 A235397 A235398 * A235400 A235401 A235402 KEYWORD nonn,base AUTHOR Antonio GraciĆ” Llorente, Jan 09 2014 EXTENSIONS a(37)-a(57) from Lars Blomberg, Feb 10 2016 STATUS approved

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Last modified July 30 23:12 EDT 2021. Contains 346365 sequences. (Running on oeis4.)