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A272687
First differences of A078482.
1
1, 1, 4, 14, 50, 184, 694, 2670, 10440, 41374, 165830, 671084, 2738334, 11254362, 46547340, 193592830, 809165002, 3397135168, 14319385126, 60576862358, 257109077584, 1094541239294, 4672423779086, 19996407893908, 85778157486910, 368757697819570, 1588465839532628, 6855304750273902
OFFSET
0,3
MATHEMATICA
Differences[CoefficientList[Series[(1-3 x+x^2-Sqrt[1-6 x+7 x^2-2 x^3+x^4])/(2 x), {x, 0, 40}], x]] (* Harvey P. Dale, Jun 08 2024 *)
CROSSREFS
Cf. A078482, A272686 (second differences).
Sequence in context: A211308 A087945 A051924 * A076024 A062807 A363507
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 24 2016
STATUS
approved