Number of broken alternating permutations of n things.
A302691
Number of broken alternating permutations of n things.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =7a(5) =26a(6) =117a(7) =594a(8) =3407a(9) =21682a(10) =151853a(11) =1160026a(12) =9600567a(13) =85566378a(14) =817099909a(15) =8322907298a(16) =90074979487
External references
- oeis: A302691