a(n) = 3rd elementary symmetric function of the first n+2 positive integers congruent to 2 mod 3.

A024392

a(n) = 3rd elementary symmetric function of the first n+2 positive integers congruent to 2 mod 3.

Terms

    a(0) =80a(1) =806a(2) =4040a(3) =14155a(4) =39655a(5) =95200a(6) =204036a(7) =400830a(8) =734910a(9) =1273910a(10) =2107820a(11) =3353441a(12) =5159245a(13) =7710640a(14) =11235640a(15) =16010940a(16) =22368396a(17) =30701910a(18) =41474720a(19) =55227095a(20) =72584435a(21) =94265776a(22) =121092700a(23) =153998650a(24) =194038650a(25) =242399430

External references