Number of base 19 n-digit numbers with adjacent digits differing by one or less.

A126373

Number of base 19 n-digit numbers with adjacent digits differing by one or less.

Terms

    a(0) =1a(1) =19a(2) =55a(3) =161a(4) =473a(5) =1393a(6) =4109a(7) =12135a(8) =35871a(9) =106113a(10) =314093a(11) =930187a(12) =2755955a(13) =8168423a(14) =24218539a(15) =71826449a(16) =213075513a(17) =632242305a(18) =1876395357a(19) =5569898331a(20) =16536545331a(21) =49103259773a(22) =145827049265a(23) =433134662087

External references