A324119 - OEIS

A324119

a(n) = A001221(A156552(n)).

0, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 2, 2, 1, 2, 1, 1, 2, 2, 2, 1, 1, 1, 3, 2, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 3, 1, 1, 1, 2, 1, 3, 2, 1, 1, 1, 2, 2, 2, 2, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 2, 2, 2, 1, 1, 3, 2, 1, 2, 3, 3, 3, 2, 1, 2, 2, 2, 3, 3, 3, 2, 1, 1, 3, 2, 1, 2, 1, 1, 3, 1, 1, 1, 1, 1, 3, 2, 1, 2, 3, 2, 2, 2, 2, 2, 2

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OFFSET

2,8

LINKS

Antti Karttunen, Table of n, a(n) for n = 2..4473

Index entries for sequences related to binary expansion of n

Index entries for sequences computed from indices in prime factorization

PROG

(PARI)

A064989(n) = {my(f); f = factor(n); if((n>1 && f[1, 1]==2), f[1, 2] = 0); for (i=1, #f~, f[i, 1] = precprime(f[i, 1]-1)); factorback(f)};

A156552(n) = if(1==n, 0, if(!(n%2), 1+(2*A156552(n/2)), 2*A156552(A064989(n))));

A324119(n) = if(1==n, 0, omega(A156552(n)));