Row sums of the triangular array A246694.

Terms

a(0) =1a(1) =3a(2) =9a(3) =18a(4) =35a(5) =57a(6) =91a(7) =132a(8) =189a(9) =255a(10) =341a(11) =438a(12) =559a(13) =693a(14) =855a(15) =1032a(16) =1241a(17) =1467a(18) =1729a(19) =2010a(20) =2331a(21) =2673a(22) =3059a(23) =3468a(24) =3925a(25) =4407a(26) =4941a(27) =5502a(28) =6119a(29) =6765