Catalan paths: numbers starting with 1 and ending with 1 where each digit is positive and adjacent digits differ by 1.
A079215
Catalan paths: numbers starting with 1 and ending with 1 where each digit is positive and adjacent digits differ by 1.
Terms
- a(0) =1a(1) =121a(2) =12121a(3) =12321a(4) =1212121a(5) =1212321a(6) =1232121a(7) =1232321a(8) =1234321a(9) =121212121a(10) =121212321a(11) =121232121a(12) =121232321a(13) =121234321a(14) =123212121a(15) =123212321a(16) =123232121a(17) =123232321a(18) =123234321a(19) =123432121a(20) =123432321a(21) =123434321a(22) =123454321
External references
- oeis: A079215