Binomial transform of n^n (with interpolated zeros).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =11a(5) =31a(6) =103a(7) =351a(8) =1321a(9) =5113a(10) =21201a(11) =90465a(12) =406621a(13) =1879021a(14) =9051309a(15) =44754061a(16) =229059633a(17) =1201271409a(18) =6488957521a(19) =35853950609a(20) =203303964341