A212871 Number of nondecreasing sequences of 4 1..n integers with no element dividing the sequence sum.

0, 0, 1, 5, 15, 29, 59, 103, 168, 259, 386, 553, 772, 1043, 1401, 1832, 2356, 2980, 3729, 4622, 5680, 6872, 8263, 9872, 11716, 13767, 16122, 18765, 21707, 25010, 28650, 32686, 37173, 42036, 47466, 53375, 59783, 66728, 74355, 82632, 91519, 101150

Offset: 1

Author

R. H. Hardin May 29 2012

Keywords

• nonn

Comments

Row 4 of A212868

Examples

			Some solutions for n=8
..2....3....4....3....4....3....2....4....4....2....2....3....4....2....2....2
..3....3....7....5....5....3....5....4....6....3....4....5....6....2....5....5
..6....5....7....7....5....4....6....5....7....4....5....5....8....3....5....5
..8....5....7....7....5....7....8....6....8....8....8....6....8....4....7....5
		

Links

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