p*(p+1)*(p+2)/6 where (p,p+2) are twin primes.

Terms

a(0) =10a(1) =35a(2) =286a(3) =969a(4) =4495a(5) =12341a(6) =35990a(7) =62196a(8) =176851a(9) =209934a(10) =437989a(11) =562475a(12) =971970a(13) =1179616a(14) =1293699a(15) =1975354a(16) =2303960a(17) =3280455a(18) =3737581a(19) =5061836a(20) =7023974a(21) =12347930a(22) =13436856a(23) =16435111a(24) =23706021a(25) =30865405a(26) =35999900a(27) =39338069