a(n)/n! is the probability of guessing "up/down" correctly through a deck of n cards marked 1, 2, ..., n, if one always makes the most probable guess.
A144188
a(n)/n! is the probability of guessing "up/down" correctly through a deck of n cards marked 1, 2, ..., n, if one always makes the most probable guess.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =16a(5) =62a(6) =286a(7) =1519a(8) =9184a(9) =62000a(10) =463964a(11) =3800684a(12) =33911424a(13) =326678010a(14) =3385261194a(15) =37492199549a(16) =442541571936
External references
- oeis: A144188