A246515 - OEIS

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A246515

a(n) such that the series 1/((1-x^a(1))(1-x^a(2))...)=1+x+x^8+x^27+...+x^(j^3)+... when read mod 2.

1, 2, 4, 9, 10, 11, 12, 13, 14, 15, 18, 19, 22, 23, 25, 26, 27, 30, 37, 38, 40, 41, 42, 44, 45, 48, 51, 52, 53, 54, 55, 56, 58, 59, 64, 67, 68, 70, 71, 72, 73, 74, 79, 82, 83, 84, 86, 88, 89, 93

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..50.

MATHEMATICA

iend=150;

aim=CoefficientList[Sum[x^(i^3), {i, 0, iend^(1/3)+1}], x];

c[1]=1;

index=1;

For[i=1, i<iend, i++,

ser=Mod[CoefficientList[Series[1/( Product[(1-x^c[j]), {j, 1, index}] ), {x, 0, iend+1}], x], 2];