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A059869 Numbers n such that there exist no palindromic heptagonals of length n. 4

%I

%S 8,9,14,16,32

%N Numbers n such that there exist no palindromic heptagonals of length n.

%H P. De Geest, <a href="http://www.worldofnumbers.com/hepta.htm">Palindromic heptagonals</a>

%Y Cf. A034822, A034307, A059868, A059870, A000566, A054971, A054910.

%K nonn,base,hard

%O 1,1

%A _Patrick De Geest_, Feb 15 2000.

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Last modified December 15 08:47 EST 2018. Contains 318147 sequences. (Running on oeis4.)