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A026061
a(n) = (d(n)-r(n))/2, where d = A026060 and r is the periodic sequence with fundamental period (1,0,0,0).
0
22, 40, 63, 92, 127, 170, 220, 278, 344, 420, 505, 600, 705, 822, 950, 1090, 1242, 1408, 1587, 1780, 1987, 2210, 2448, 2702, 2972, 3260, 3565, 3888, 4229, 4590, 4970, 5370, 5790, 6232, 6695, 7180, 7687, 8218, 8772, 9350, 9952, 10580, 11233, 11912, 12617, 13350, 14110, 14898
OFFSET
5,1
FORMULA
G.f.: x^5*( 22-26*x+9*x^2+x^3+28*x^5-10*x^6-22*x^4 ) / ( (1+x)*(x^2+1)*(x-1)^4 ). - R. J. Mathar, Jun 23 2013
CROSSREFS
Sequence in context: A131196 A075217 A188156 * A138040 A154087 A063327
KEYWORD
nonn,easy
STATUS
approved