a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = (natural numbers), t = (natural numbers >= 3).

A024854

a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = (natural numbers), t = (natural numbers >= 3).

Terms

    a(0) =4a(1) =5a(2) =16a(3) =19a(4) =40a(5) =46a(6) =80a(7) =90a(8) =140a(9) =155a(10) =224a(11) =245a(12) =336a(13) =364a(14) =480a(15) =516a(16) =660a(17) =705a(18) =880a(19) =935a(20) =1144a(21) =1210a(22) =1456a(23) =1534a(24) =1820a(25) =1911a(26) =2240a(27) =2345a(28) =2720a(29) =2840

External references