A184841 Number of strings of numbers x(i=1..n) in 0..2 with sum i*x(i)^4 equal to n*16

1, 1, 2, 2, 3, 7, 13, 25, 54, 122, 253, 558, 1199, 2596, 5619, 12049, 25695, 54733, 115830, 244106, 512444, 1070965, 2229313, 4622382, 9546244, 19639568, 40254273, 82200330, 167244370, 339055002, 684919569, 1378730235, 2765690543, 5528683663

Offset

1,3

Comments

Column 2 of A184848

Links

R. H. Hardin, Table of n, a(n) for n = 1..151

Example

All solutions for n=5
..2....0....0
..0....2....0
..0....2....0
..2....0....0
..0....0....2

Crossrefs

Sequence in context: A049905 A167348 A068524 * A109277 A093437 A075059

Adjacent sequences: A184838 A184839 A184840 * A184842 A184843 A184844

Keyword

nonn

Author

R. H. Hardin Jan 23 2011

Status

approved