|
|
A023551
|
|
Self-convolution of natural numbers >= 3.
|
|
2
|
|
|
9, 24, 46, 76, 115, 164, 224, 296, 381, 480, 594, 724, 871, 1036, 1220, 1424, 1649, 1896, 2166, 2460, 2779, 3124, 3496, 3896, 4325, 4784, 5274, 5796, 6351, 6940, 7564, 8224, 8921, 9656, 10430, 11244, 12099, 12996, 13936, 14920, 15949
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
a(n) = n*(n^2 + 15*n + 38)/6. - Robert Lester (RobertLester(AT)Earthlink.net), Jan 31 2005
|
|
PROG
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|