A254941 Number of length n 1..(2+1) arrays with every leading partial sum divisible by 2, 3, 5, 7 or 11

2, 6, 18, 54, 148, 342, 705, 1326, 2326, 4173, 8361, 18604, 41296, 85118, 169747, 352477, 758153, 1594105, 3165858, 5975091, 11145201, 21712333, 45705877, 102683622, 237061239, 543357180, 1209463533, 2598223818, 5445429743

Offset

1,1

Comments

Column 2 of A254947

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..3....3....3....2....2....2....2....2....2....2....2....3....3....3....3....3
..2....3....3....1....2....1....3....3....2....1....1....2....1....3....3....1
..3....2....3....3....1....2....1....2....3....1....2....1....2....2....1....1
..2....3....1....2....3....2....3....2....1....3....3....3....2....1....3....3

Crossrefs

Sequence in context: A358417 A214799 A072850 * A182899 A160175 A072852

Adjacent sequences: A254938 A254939 A254940 * A254942 A254943 A254944

Keyword

nonn

Author

R. H. Hardin, Feb 10 2015

Status

approved