Variation on betrothed numbers.

Terms

a(0) =6160a(1) =11697a(2) =12220a(3) =16005a(4) =23500a(5) =28917a(6) =68908a(7) =76245a(8) =249424a(9) =339825a(10) =425500a(11) =434784a(12) =570405a(13) =649990a(14) =660825a(15) =678376a(16) =697851a(17) =871585a(18) =1017856a(19) =1077336a(20) =1238380a(21) =1252216a(22) =1340865a(23) =1483785a(24) =1568260a(25) =1754536a(26) =1823925a(27) =1899261a(28) =2067625a(29) =2166136