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A165211
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Period 8: repeat 0,1,0,1,1,0,1,0.
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0
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0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Parity of A064706.
Parity of the generalized pentagonal numbers A001318. - Omar E. Pol, Feb 04 2012
More generally, parity of the generalized k-gonal numbers, for odd k >= 5. - Omar E. Pol, Feb 05 2012
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FORMULA
| a(n)=(1/56)*{(n mod 8)+8*[(n+1) mod 8]-6*[(n+2) mod 8]+8*[(n+3) mod 8]+[(n+4) mod 8]-6*[(n+5) mod 8]+8*[(n+6) mod 8]-6*[(n+7) mod 8]}, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Sep 16 2009]
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MATHEMATICA
| PadRight[{}, 112, {0, 1, 0, 1, 1, 0, 1, 0}] (* From Harvey P. Dale, Jan 29 2012 *)
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CROSSREFS
| Sequence in context: A093879 A117872 A089809 * A096270 A159689 A174282
Adjacent sequences: A165208 A165209 A165210 * A165212 A165213 A165214
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KEYWORD
| nonn,changed
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AUTHOR
| Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Sep 07 2009
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