This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A230116 Value of row n in triangle A166360 when seen as binary number. 3
 1, 3, 7, 9, 17, 51, 127, 129, 257, 771, 1799, 2313, 4369, 13107, 32767, 32769, 65537, 196611, 458759, 589833, 1114129, 3342387, 8323199, 8454273, 16843009, 50529027, 117901063, 151587081, 286331153, 858993459, 2147483647, 2147483649, 4294967297, 12884901891 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) = sum(A166360(n,k)*2^(k-1): k=1..n). LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..1000 EXAMPLE .   n         A166360(n,1..n)             A007088(a(n))    a(n) . ---  -----------------------------    ---------------   ----- .   1                1                                1       1 .   2               1 1                              11       3 .   3              1 1 1                            111       7 .   4             1 0 0 1                          1001       9 .   5            1 0 0 0 1                        10001      17 .   6           1 1 0 0 1 1                      110011      51 .   7          1 1 1 1 1 1 1                    1111111     127 .   8         1 0 0 0 0 0 0 1                  10000001     129 .   9        1 0 0 0 0 0 0 0 1                100000001     257 .  10       1 1 0 0 0 0 0 0 1 1              1100000011     771 .  11      1 1 1 0 0 0 0 0 1 1 1            11100000111    1799 .  12     1 0 0 1 0 0 0 0 1 0 0 1          100100001001    2313 .  13    1 0 0 0 1 0 0 0 1 0 0 0 1        1000100010001    4369 .  14   1 1 0 0 1 1 0 0 1 1 0 0 1 1      11001100110011   13107 .  15  1 1 1 1 1 1 1 1 1 1 1 1 1 1 1    111111111111111   32767 . PROG (Haskell) a230116 = foldr (\u v-> 2*v + u) 0 . map toInteger . a166360_row CROSSREFS Cf. A001317, A001263. Sequence in context: A036978 A079464 A036976 * A031273 A140118 A191106 Adjacent sequences:  A230113 A230114 A230115 * A230117 A230118 A230119 KEYWORD nonn AUTHOR Reinhard Zumkeller, Oct 10 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 23 14:11 EDT 2019. Contains 328345 sequences. (Running on oeis4.)