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A118409
Unsigned row sums of triangle A118407.
2
1, 1, 3, 5, 5, 7, 11, 17, 21, 27, 47, 73, 85, 111, 187, 289, 341, 443, 751, 1161, 1365, 1775, 3003, 4641, 5461, 7099, 12015, 18569, 21845, 28399, 48059, 74273, 87381, 113595, 192239, 297097, 349525, 454383, 768955, 1188385, 1398101, 1817531
OFFSET
0,3
FORMULA
G.f.: (1+2*x^2+2*x^3-3*x^4+2*x^5-2*x^6)/(1+x^4)/(1-4*x^4)/(1-x).
PROG
(PARI) {a(n)=polcoeff((1+2*x^2+2*x^3-3*x^4+2*x^5-2*x^6)/(1+x^4)/(1-4*x^4)/(1-x+x*O(x^n)), n)}
CROSSREFS
Cf. A118407 (triangle), A118408 (row sums).
Sequence in context: A272882 A077800 A073340 * A162779 A158284 A090941
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 27 2006
STATUS
approved