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%I
%S 0,7,210,2205,12208,47845,148638,393617,922600,1970325,3902360,
%T 7270725,12868128,21811881,35617708,56319375,86565808,129780448,
%U 190285326,273509446,386137220,536375658,734131552,991339307,1322171256,1743437850,2274824006,2939374683
%N Sum of all the parts in the partitions of 7n into 7 parts.
%F a(n) = 7*n*A256287(n).
%e For n=2 there are 15 partitions of 7*2 = 14, so a(2) = 15*14 = 210.
%t Plus @@ Total /@ IntegerPartitions[7 #, {7}] & /@ Range[0, 24] (* _Michael De Vlieger_, Mar 21 2015 *)
%o (PARI) concat(0, vector(35, n, k=0; forpart(p=7*n, k++, , [7,7]); 7*n*k))
%Y Cf. A235988, A238328, A256235, A256287.
%K nonn
%O 0,2
%A _Colin Barker_, Mar 21 2015
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