OFFSET
1,2
LINKS
G. E. Andrews, Further Problems on Partitions, The American Mathematical Monthly, Vol. 94, No. 5 (1987), 437-439.
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,-1).
FORMULA
From Colin Barker, Dec 01 2019: (Start)
G.f.: x*(1 + 3*x + 2*x^2 + 3*x^3 + 2*x^4 + 3*x^5 + 2*x^6 + 3*x^7 + 2*x^8 + x^9 + 2*x^10 + 2*x^11 + 3*x^12 + 2*x^13 + 2*x^14 + x^15 + 2*x^16 + 3*x^17 + 2*x^18 + 3*x^19 + 2*x^20 + 3*x^21 + 2*x^22 + 3*x^23 + x^24) / ((1 - x)^2*(1 + x)*(1 - x + x^2)*(1 + x^2)*(1 + x + x^2)*(1 - x^2 + x^4)*(1 + x^4)*(1 - x^4 + x^8)).
a(n) = a(n-1) + a(n-24) - a(n-25) for n>25.
(End)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 29 2019
STATUS
approved