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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

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Last modified August 17 23:58 EDT 2017. Contains 290682 sequences.