|
Search: id:A006597
|
|
| |
|
| 0, 1, 14, 54, 136, 275, 486, 784, 1184, 1701, 2350, 3146, 4104, 5239, 6566, 8100, 9856, 11849, 14094, 16606, 19400, 22491, 25894, 29624, 33696, 38125, 42926, 48114, 53704, 59711, 66150, 73036, 80384
(list; graph; listen)
|
|
|
OFFSET
|
0,3
|
|
|
COMMENT
|
Structured heptagonal prism numbers. - James A. Record (james.record(AT)gmail.com). Nov. 7, 2004.
|
|
REFERENCES
|
W. A. Whitworth, DCC Exercises in Choice and Chance, Stechert, NY, 1945, p. 29.
|
|
FORMULA
|
a(n)=(1/6)*(15*n^3-9*n^2) - James A. Record (james.record(AT)gmail.com). Nov. 7, 2004.
|
|
CROSSREFS
|
Cf. A100177 - structured prisms; A100145 for more on structured numbers.
Adjacent sequences: A006594 A006595 A006596 this_sequence A006598 A006599 A006600
Sequence in context: A118856 A118530 A048971 this_sequence A114012 A140784 A022285
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
njas
|
|
|
Search completed in 0.002 seconds
|
