Sum of staircase twin primes according to the rule: top * bottom + next top.

Terms

a(0) =20a(1) =46a(2) =160a(3) =352a(4) =940a(5) =1822a(6) =3670a(7) =5284a(8) =10510a(9) =11800a(10) =19192a(11) =22678a(12) =32590a(13) =37060a(14) =39430a(15) =52222a(16) =57868a(17) =73180a(18) =79834a(19) =97690a(20) =121522a(21) =176830a(22) =187084a(23) =213964a(24) =273052a(25) =325498a(26) =360616a(27) =382564a(28) =412822a(29) =436408