Minimum even value unattainable as the sum of 5 attained values of i*(i-1) with i in 0..n.

Terms

a(0) =2a(1) =12a(2) =28a(3) =46a(4) =88a(5) =118a(6) =160a(7) =206a(8) =304a(9) =340a(10) =448a(11) =522a(12) =592a(13) =752a(14) =878a(15) =964a(16) =1078a(17) =1252a(18) =1414a(19) =1558a(20) =1738a(21) =1858a(22) =2098a(23) =2260a(24) =2386a(25) =2702a(26) =2848a(27) =3090a(28) =3398a(29) =3562