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A036070
Expansion of (-1+1/(1-4*x)^4)/(16*x); related to A038846.
5
1, 10, 80, 560, 3584, 21504, 122880, 675840, 3604480, 18743296, 95420416, 477102080, 2348810240, 11408506880, 54760833024, 260113956864, 1224065679360, 5712306503680, 26456998543360, 121702193299456
OFFSET
0,2
LINKS
FORMULA
a(n) = 4^(n-1)*binomial(n+4, 3); G.f. (-1+(1-4*x)^(-4))/(x*4^2).
CROSSREFS
Cf. A038846, A001787. a(n)= A030526(n+1, 1) (first column of triangle).
Sequence in context: A000575 A220485 A055285 * A374511 A377199 A257286
KEYWORD
easy,nonn
STATUS
approved