

A081929


Sum of the nth row of A077339.


0



1, 22, 64, 127, 211, 316, 442, 589, 757, 946, 1156, 2467, 3979, 5692, 7606, 9721, 12037, 14554, 17272, 20191, 23311, 26632, 30154, 33877, 37801, 41926, 46252, 50779, 55507, 60436, 65566, 70897, 76429, 82162, 88096, 94231, 100567, 107104
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OFFSET

1,2


LINKS



FORMULA

For n>10, a(n) = 1/2 * (201n^2  2001n + 2).
a(n) = 3*a(n1)  3*a(n2) + a(n3) for n > 13.
G.f.: x*(900*x^12  1080*x^11  x^2  19*x  1)/(x  1)^3. (End)


CROSSREFS



KEYWORD

base,easy,nonn


AUTHOR



EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 19 2003


STATUS

approved



