A324100 - OEIS

A324100

A000120-deficiency of n permuted by A156552: a(n) = A192895(A156552(n)).

-1, 0, -1, 1, -1, 2, -2, 2, 1, 3, -2, 4, -1, 2, 1, 5, -2, 6, -2, 6, 4, 7, -3, 5, 4, 2, 3, 8, 3, 9, -4, 2, 5, 5, 1, 10, -1, 12, 2, 11, -2, 12, -2, 2, 19, 13, -4, 8, 0, 12, -2, 14, -3, 11, -3, 14, 12, 15, -3, 16, 7, 2, 5, 5, 4, 17, 4, 2, -2, 18, 1, 19, 6, 2, 5, 8, 4, 20, -4, 10, 8, 21, 8, 20, 24, 42, 15, 22, 7, 16, 6, 28, 45, 20, 0, 23, 1, 12, 1

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OFFSET

2,6

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

FORMULA

a(n) = A192895(A156552(n)).

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)};