A Diaconis-Mosteller approximation to the Birthday problem function.

Terms

a(0) =1a(1) =23a(2) =88a(3) =187a(4) =313a(5) =459a(6) =622a(7) =797a(8) =983a(9) =1179a(10) =1382a(11) =1592a(12) =1809a(13) =2031a(14) =2257a(15) =2489a(16) =2724a(17) =2963a(18) =3205a(19) =3450a(20) =3698a(21) =3949a(22) =4203a(23) =4459a(24) =4717a(25) =4977a(26) =5239a(27) =5503a(28) =5768a(29) =6036