%I #6 Nov 30 2020 15:13:40
%S 1,4,9,16,27,41,57,77,103,133,167,205,249,301,358,418,486,560,642,734,
%T 832,932,1038,1156,1282,1418,1566,1721,1880,2043,2215,2403,2601,2811,
%U 3035,3267,3505,3751,4003,4267,4551,4847,5157,5483,5818,6157,6508,6871,7242
%N Sums of antidiagonals in A283681.
%H Rémy Sigrist, <a href="/A339330/a339330.gp.txt">PARI program for A339330</a>
%F a(n) = Sum_{k = 1..n} k * A283681(n+1-k).
%o (PARI) See Links section.
%Y Cf. A283681.
%K nonn
%O 1,2
%A _Rémy Sigrist_, Nov 30 2020