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A059901 Partitions encoded by prime factorization. The partition [P1+P2+P3+...] with P1>=P2>=P3>=... is encoded as 2^P1 * 3^P2 * 5^P3 *... 8

%I

%S 1,2,4,6,8,12,30,16,24,60,36,210,32,48,120,72,420,180,2310,64,96,240,

%T 144,840,360,216,4620,1260,900,30030,128,192,480,288,1680,720,432,

%U 9240,2520,1800,1080,60060,13860,6300,510510,256,384,960,576,3360,1440,864

%N Partitions encoded by prime factorization. The partition [P1+P2+P3+...] with P1>=P2>=P3>=... is encoded as 2^P1 * 3^P2 * 5^P3 *...

%C Partitions are ordered first by sum, then lexicographically: [] [1] [2] [1+1] [3] [2+1] [1+1+1] [4]... Rearrangement of A025487, A036035 etc.

%F a(n)=A059900(A059902(n))

%e Partition for n=17 is [2+2+1], so a(17)=2^2*3^2*5=180.

%Y A059902, A059900, A025487, A036035, A000041.

%K easy,nonn

%O 0,2

%A _Marc LeBrun_, Feb 07 2001

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Last modified February 23 18:54 EST 2018. Contains 299586 sequences. (Running on oeis4.)