1,2
7*C(n + 2, 4) + C(n + 1, 2).
G.f.:(-1-x^2-5*x)/(x-1)^5 [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 10 2009]
Sequence in context: A016082 A003355 A022278 this_sequence A102784 A061003 A048879
Adjacent sequences: A006320 A006321 A006322 this_sequence A006324 A006325 A006326
nonn,easy
Albert Rich (Albert_Rich(AT)msn.com)
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