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%I #6 Mar 04 2018 14:40:40
%S 1,1,4,1,8,17,1,12,49,80,1,16,97,280,401,1,20,161,672,1569,2084,1,24,
%T 241,1320,4321,8752,11073,1,28,337,2288,9681,26684,48833,59712,1,32,
%U 449,3640,18929,66376,160929,272976,325441,1,36,577,5440,33601,143444,435681
%N Left-hand half of triangle A297193.
%e Triangle begins:
%e 1,
%e 1,4,
%e 1,8,17,
%e 1,12,49,80,
%e 1,16,97,280,401,
%e 1,20,161,672,1569,2084,
%e ...
%p seq(seq(A297193(n,k),k=0..n),n=0..10) ; # _R. J. Mathar_, Mar 04 2018
%Y Cf. A008288, A297193.
%K nonn,easy,tabl
%O 0,3
%A _N. J. A. Sloane_, Jan 10 2018