ID Number: A028552
Sequence: 0,4,10,18,28,40,54,70,88,108,130,154,180,208,238,270,304,
340,378,418,460,504,550,598,648,700,754,810,868,928,990,
1054,1120,1188,1258,1330,1404,1480,1558,1638,1720,1804,1890,
1978,2068
Name: n(n+3).
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Comment:
n(n-3) (n>=3) is the number of [body] diagonals of an n-gonal prism.
Antreas