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A279353
a(n) = A055938(n+1) XOR A055938(n).
3
7, 3, 15, 5, 1, 3, 31, 5, 1, 13, 3, 7, 1, 3, 63, 5, 1, 13, 3, 7, 1, 29, 3, 7, 3, 13, 1, 7, 1, 3, 127, 5, 1, 13, 3, 7, 1, 29, 3, 7, 3, 13, 1, 7, 1, 61, 3, 7, 3, 13, 1, 7, 3, 29, 1, 5, 15, 3, 1, 7, 1, 3, 255, 5, 1, 13, 3, 7, 1, 29, 3, 7, 3, 13, 1, 7, 1, 61, 3, 7, 3, 13, 1, 7, 3, 29, 1, 5, 15, 3, 1, 7, 1, 125, 3, 7, 3, 13, 1, 7, 3, 29, 1, 5, 15
OFFSET
1,1
LINKS
FORMULA
a(n) = A055938(n+1) XOR A055938(n).
MATHEMATICA
Function[t, BitXor @@ # & /@ Transpose@ {Rest@ t, Most@ t}]@ Complement[Range@ Last@ #, #] &@ Table[IntegerExponent[(2 n)!, 2], {n, 0, 112}] (* Michael De Vlieger, Mar 15 2017, after Jean-François Alcover at A055938 *)
PROG
(Scheme) (define (A279353 n) (A003987bi (A055938 (+ 1 n)) (A055938 n))) ;; Here A003987bi implements a bitwise-XOR (A003987).
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Mar 15 2017
STATUS
approved