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A328079
First differences of A328078.
1
1, 1, 2, 4, 6, 12, 21, 43, 78, 156, 293, 583, 1118, 2208, 4277, 8423, 16422, 32280, 63117, 123951, 242782, 476560, 934181, 1833255, 3595254, 7054600, 13837949, 27151135, 53264270, 104505920, 205027797, 402264599, 789215654
OFFSET
0,3
FORMULA
Conjecture: G.f. = (4*x^11-8*x^10+4*x^9+4*x^8-8*x^7+7*x^6-4*x^5-5*x^4+2*x^3-2*x^2+1) / ((x^2+1)*(2*x^2-1)*(4*x^7-4*x^6+4*x^4-2*x^3+2*x^2+x-1)). - N. J. A. Sloane, Oct 16 2019
CROSSREFS
Cf. A328078.
Sequence in context: A341858 A105541 A105536 * A321739 A073660 A102588
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Oct 13 2019
EXTENSIONS
a(8)-a(32) from Rémy Sigrist, Oct 15 2019
STATUS
approved