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A236378
Difference between n and the result obtained when n is remultiplied from N to GF(2)[X]: a(n) = n - A234741(n).
6
0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 12, 0, 0, 0, 8, 0, 12, 0, 0, 0, 0, 0, 4, 0, 8, 16, 0, 0, 16, 0, 0, 24, 0, 0, 28, 0, 0, 0, 28, 16, 0, 0, 0, 24, 16, 0, 4, 0, 0, 0, 0, 0, 36, 0, 8, 8, 0, 0, 12, 16, 0, 32, 0, 0, 24, 0, 28, 32, 0, 0, 64, 0, 0, 48, 0, 0, 48, 0, 0, 56, 56, 0, 60
OFFSET
0,10
COMMENTS
a(n) is the difference of n and the number obtained when the prime divisors of n are multiplied together in such a way that the carry-bits from intermediate products are discarded, as in A048720.
All terms are divisible by 4.
LINKS
CROSSREFS
Cf. A235034 (gives the positions of zeros).
Sequence in context: A178990 A276570 A360543 * A341880 A308426 A308429
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 24 2014
STATUS
approved