|
Search: id:A131878
|
|
| |
|
| 1, 22, 57, 106, 169, 246, 337, 442, 561, 694, 841, 988, 1163, 1352, 1555, 1772, 2003, 2248, 2507, 2780, 3067, 3368, 3683, 4012, 4355, 4712, 5083, 5468, 5867, 6280, 6707, 7148, 7603, 8072, 8569, 9066, 9577, 10102, 10641
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
FORMULA
|
Binomial transform of (1, 21, 14, 0, 0, 0,...).
a(n)=14*n+a(n-1)-7 (with a(1)=1) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 15 2009]
|
|
EXAMPLE
|
a(2) = 57 = sum of row 2 terms of triangle A131876: (29 + 15 + 13).
a(2) = 57 = (1, 2, 1) dot (1, 21, 14) = (1 + 42 + 14).
For n=2, a(2)=14*2+1-7=22; n=3, a(3)=14*3+22-7=57; n=4, a(4)=14*4+57-7=106 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 15 2009]
|
|
CROSSREFS
|
Cf. A131876.
Sequence in context: A063302 A088820 A058097 this_sequence A019506 A044124 A044505
Adjacent sequences: A131875 A131876 A131877 this_sequence A131879 A131880 A131881
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Gary W. Adamson (qntmpkt(AT)yahoo.com), Jul 22 2007
|
|
EXTENSIONS
|
More terms (a(11)-a(39) from Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 15 2009
|
|
|
Search completed in 0.002 seconds
|
