Apply partial sum operator thrice to Fibonacci numbers.

Terms

a(0) =0a(1) =1a(2) =4a(3) =11a(4) =25a(5) =51a(6) =97a(7) =176a(8) =309a(9) =530a(10) =894a(11) =1490a(12) =2462a(13) =4043a(14) =6610a(15) =10773a(16) =17519a(17) =28445a(18) =46135a(19) =74770a(20) =121115a(21) =196116a(22) =317484a(23) =513876a(24) =831660a(25) =1345861a(26) =2177872a(27) =3524111a(28) =5702389a(29) =9226935