a(n) = 4th elementary symmetric function of first n+3 positive integers congruent to 1 mod 3.

A024214

a(n) = 4th elementary symmetric function of first n+3 positive integers congruent to 1 mod 3.

Terms

    a(0) =280a(1) =5714a(2) =45474a(3) =227969a(4) =859369a(5) =2662569a(6) =7141953a(7) =17147823a(8) =37702863a(9) =77161513a(10) =148781633a(11) =272796342a(12) =479082422a(13) =810530182a(14) =1327228182a(15) =2111584722a(16) =3274516506a(17) =4962843396a(18) =7368036676a(19) =10736476751a(20) =15381384711a(21) =21696600695

External references