A038794 T(n,n-4), array T as in A038792.

1, 5, 12, 21, 34, 55, 88, 138, 211, 314, 455, 643, 888, 1201, 1594, 2080, 2673, 3388, 4241, 5249, 6430, 7803, 9388, 11206, 13279, 15630, 18283, 21263, 24596, 28309, 32430, 36988, 42013, 47536, 53589, 60205, 67418, 75263

Offset

4,2

Links

Table of n, a(n) for n=4..41.

Formula

For n >= 7, a(n) = (n^4-18*n^3+143*n^2-486*n+672)/24.

a(n) = sum(A007318(n-k, k), k=0..4), n >= 7. - Johannes W. Meijer, Aug 11 2013

Crossrefs

Sequence in context: A354399 A256320 A301693 * A225284 A271250 A271539

Adjacent sequences: A038791 A038792 A038793 * A038795 A038796 A038797

Keyword

nonn

Author

Clark Kimberling, May 02 2000

Status

approved