Number of 3 X n arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 3 X n array.
A219580
Number of 3 X n arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 3 X n array.
Terms
- a(0) =10a(1) =59a(2) =415a(3) =1866a(4) =7036a(5) =24679a(6) =82431a(7) =262218a(8) =794994a(9) =2306682a(10) =6437512a(11) =17356645a(12) =45369595a(13) =115310672a(14) =285657785a(15) =691223503a(16) =1636760443a(17) =3798648663a(18) =8652302302a(19) =19363687067a(20) =42621048296a(21) =92344502687a(22) =197095580897a(23) =414682113414
External references
- oeis: A219580