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A239311
a(n) = floor(((1+sqrt(n))/2)^n).
0
1, 1, 1, 2, 5, 11, 26, 66, 180, 512, 1524, 4734, 15291, 51200, 177256, 633102, 2328306, 8801492, 34147724, 135789397, 552761344, 2300896695, 9783811169, 42459259013, 187899387609, 847288609443, 3890278628308, 18175510564018, 86354070880785, 416985884011492
OFFSET
0,4
MATHEMATICA
Table[Floor[((1 + Sqrt[n])/2)^n], {n, 0, 30}] (* Giovanni Resta, Mar 15 2014 *)
CROSSREFS
Cf. A125895.
Sequence in context: A307576 A079223 A095892 * A319760 A343872 A000664
KEYWORD
nonn
AUTHOR
Jon Perry, Mar 15 2014
STATUS
approved