1,2
Apart from the first term this is also the sequence ceiling(circumference of a circle of radius n)=ceiling(2*pi*n), n>=1.- Mohammad K. Azarian (azarian(AT)evansville.edu), Feb 29 2008
Cf. A066643.
Sequence in context: A080199 A016921 A123843 this_sequence A039281 A045115 A096452
Adjacent sequences: A004079 A004080 A004081 this_sequence A004083 A004084 A004085
nonn
Clark Kimberling (ck6(AT)evansville.edu)
Clarified my formula Mohammad K. Azarian (azarian(AT)evansville.edu), Aug 01 2009
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