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A161150
a(n) = (largest odd divisor of n)*(largest power of 2 dividing (n+1)).
1
2, 1, 12, 1, 10, 3, 56, 1, 18, 5, 44, 3, 26, 7, 240, 1, 34, 9, 76, 5, 42, 11, 184, 3, 50, 13, 108, 7, 58, 15, 992, 1, 66, 17, 140, 9, 74, 19, 312, 5, 82, 21, 172, 11, 90, 23, 752, 3, 98, 25, 204, 13, 106, 27, 440, 7, 114, 29, 236, 15, 122, 31, 4032, 1, 130, 33, 268, 17, 138
OFFSET
1,1
FORMULA
a(n)*A161151(n) = n*(n+1) = A002378(n).
a(n) = A000265(n)*A006519(n+1).
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Jun 03 2009
EXTENSIONS
Extended by Ray Chandler, Jun 11 2009
STATUS
approved