D-toothpick sequence of the third kind starting with a single toothpick.

Terms

a(0) =0a(1) =1a(2) =5a(3) =13a(4) =29a(5) =51a(6) =75a(7) =99a(8) =135a(9) =175a(10) =207a(11) =251a(12) =315a(13) =409a(14) =481a(15) =537a(16) =613a(17) =685a(18) =717a(19) =765a(20) =845a(21) =957a(22) =1097a(23) =1237a(24) =1377a(25) =1545a(26) =1665a(27) =1797a(28) =1965a(29) =2203