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A118368 Largest number that is not the sum of four (2n+1)-gonal numbers. 1


%S 0,89,1003,2894,4765,6906,14057,22296,34913,51301,60551,72335,100206,

%T 123097,148830,184931,244253,273883,291741,332935,405859,490767,

%U 546709,749357,672419,826463,849211,1009749,988071,1128245,1251029,1588435

%N Largest number that is not the sum of four (2n+1)-gonal numbers.

%C See A118367 for the largest number that is not the sum of five n-gonal numbers. Sequence A118280 has the conjectured bounds for three (2n+1)-gonal numbers.

%K nonn

%O 1,2

%A _T. D. Noe_, Apr 25 2006

%E a(26)-a(32) from _Donovan Johnson_, Apr 17 2010

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Last modified September 26 14:21 EDT 2022. Contains 356999 sequences. (Running on oeis4.)