A202954 Number of partitions of [1,...,3n] into triples satisfying x+y=4z.

1, 0, 0, 0, 0, 0, 0, 0, 6, 0, 5, 0, 0, 349, 0, 443, 0, 0, 110757, 0, 1254452, 0, 0, 152965479, 0

Offset

0,9

Comments

a(n)=0 when n is not congruent to 0 or 3 mod 5. - Edward Moody, Jan 17 2021

Links

Table of n, a(n) for n=0..24.

R. J. Nowakowski, Generalizations of the Langford-Skolem problem, M.S. Thesis, Dept. Math., Univ. Calgary, May 1975. [Scanned copy, with permission.] See Table II.6.

Crossrefs

Cf. A108235, A104429.

Sequence in context: A112280 A204850 A202394 * A218850 A021627 A257580

Adjacent sequences: A202951 A202952 A202953 * A202955 A202956 A202957

Keyword

nonn,more

Author

N. J. A. Sloane, Dec 26 2011

Extensions

a(14)-a(17) from Alois P. Heinz, Dec 28 2011

a(18) from Alois P. Heinz, Jan 04 2012

a(19)-a(24) from Edward Moody, Jan 17 2021

Status

approved