A212870 Number of nondecreasing sequences of 3 1..n integers with no element dividing the sequence sum.

0, 0, 1, 3, 9, 16, 29, 43, 64, 92, 127, 168, 219, 281, 355, 435, 531, 638, 762, 901, 1057, 1230, 1420, 1628, 1858, 2107, 2380, 2674, 2992, 3338, 3707, 4099, 4524, 4976, 5465, 5975, 6516, 7092, 7704, 8348, 9025, 9744, 10495, 11289, 12125, 12994, 13907, 14859

Offset: 1

Author

R. H. Hardin, May 29 2012

Keywords

• nonn

Comments

Row 3 of A212868.

Examples

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

Links

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

Crossrefs

Cf. A212868.