|
| |
|
|
A045946
|
|
Star of David matchstick numbers: 6n(3n+1).
|
|
2
| |
|
|
0, 24, 84, 180, 312, 480, 684, 924, 1200, 1512, 1860, 2244, 2664, 3120, 3612, 4140, 4704, 5304, 5940, 6612, 7320, 8064, 8844, 9660, 10512, 11400, 12324, 13284, 14280, 15312, 16380, 17484, 18624, 19800, 21012, 22260, 23544, 24864, 26220, 27612
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
COMMENTS
| Vertical spoke of triangular spiral in A051682. - Paul Barry (pbarry(AT)wit.ie), Mar 15 2003
|
|
|
FORMULA
| a(n)=24C(n, 1)+36C(n, 2); binomial transform of (0, 24, 36, 0, 0, 0, .....). - Paul Barry (pbarry(AT)wit.ie), Mar 15 2003
|
|
|
CROSSREFS
| Cf. A045945.
Sequence in context: A182915 A030622 A063456 * A192838 A101861 A168538
Adjacent sequences: A045943 A045944 A045945 * A045947 A045948 A045949
|
|
|
KEYWORD
| nonn,nice,easy
|
|
|
AUTHOR
| R. K. Guy
|
| |
|
|
