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 A178373 a(n) = A001969(n)^A178253(n). 2
 81, 25, 1296, 81, 100, 20736, 50625, 289, 324, 400, 529, 331776, 14348907, 841, 810000, 1089, 1156, 1296, 1521, 1600, 1849, 91125, 2116, 5308416, 2601, 7890481, 459165024, 601692057, 3364, 12960000, 15752961, 4225, 4356, 4624, 5041, 5184 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) is in A000069 for all n. Since A001969(n) = 2*n + A010060(n) it follows that this sequence has the same parity as A010060. LINKS Table of n, a(n) for n=1..36. EXAMPLE A001969(1)=3, A178253(1)=4, a(1)=3^4=81. PROG (PARI) a(n)=my(e=2*n--+hammingweight(n)%2, m=1); e>>=valuation(e, 2); while(hammingweight(e^m++)%2==0, ); e^m \\ Charles R Greathouse IV, Mar 22 2013 CROSSREFS Cf. A000069, A001969, A010060, A178253. Sequence in context: A065793 A214104 A175241 * A147674 A033401 A143756 Adjacent sequences: A178370 A178371 A178372 * A178374 A178375 A178376 KEYWORD easy,nonn AUTHOR Jeremy Gardiner, May 26 2010 STATUS approved

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Last modified September 17 04:45 EDT 2024. Contains 375985 sequences. (Running on oeis4.)