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A194124 a(n) = Sum_{k=0..floor(n/2)} (C(n+2,k) - C(n+2,k+2)). 3
0, 2, 5, 14, 28, 62, 117, 242, 451, 912, 1703, 3418, 6420, 12854, 24293, 48602, 92359, 184736, 352695, 705410, 1352055, 2704132, 5200275, 10400574, 20058273, 40116572, 77558731, 155117490, 300540164, 601080358, 1166803077, 2333606186 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..31.

MATHEMATICA

T[n_, k_] := Binomial[n + 2, k + 2] - Binomial[n + 2, k]

s[n_] := Sum[T[n, k], {k, 0, Floor[n/2]}]

Flatten[Table[s[n], {n, 0, 35}]]  (* A194124 *)

CROSSREFS

Cf. A194123.

Sequence in context: A214203 A100779 A212346 * A212340 A304719 A022630

Adjacent sequences:  A194121 A194122 A194123 * A194125 A194126 A194127

KEYWORD

nonn,changed

AUTHOR

Clark Kimberling, Aug 16 2011

STATUS

approved

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Last modified May 27 17:45 EDT 2018. Contains 304710 sequences. (Running on oeis4.)