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Binomial(n+9, 9)*7^n
1

%I #6 Sep 08 2022 08:45:59

%S 1,70,2695,75460,1716715,33647614,588833245,9421331920,140142312310,

%T 1961992372340,26094498552122,332111799754280,4068369546989930,

%U 48194531556649940,554237112901474310,6207455664496512272,67894046330430602975

%N Binomial(n+9, 9)*7^n

%H Vincenzo Librandi, <a href="/A197192/b197192.txt">Table of n, a(n) for n = 0..400</a>

%F a(n) = C(n + 9, 9)*7^n.

%o (Magma) [Binomial(n+9, 9)*7^n: n in [0..20]]

%Y Cf. A139641, A140107, A140404, A170932

%K nonn,easy

%O 0,2

%A _Vincenzo Librandi_, Oct 13 2011