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A171174 Triangle read by rows in which row n lists A033627(n) together with the first 2n-1 numbers <> 0 of A038608. 9
2, -1, 4, -1, 2, -3, 7, -1, 2, -3, 4, -5, 10, -1, 2, -3, 4, -5, 6, -7, 13, -1, 2, -3, 4, -5, 6, -7, 8, -9, 16, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 19, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, -13, 22, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, -13, 14, -15, 25, -1, 2, -3, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Absolute values give A171173.
Note that the partial sums of this sequence gives A171175, a permutation of the natural numbers.
LINKS
EXAMPLE
Triangle begins:
2, -1,
4, -1,2,-3,
7, -1,2,-3,4,-5,
10,-1,2,-3,4,-5,6,-7,
13,-1,2,-3,4,-5,6,-7,8,-9,
16,-1,2,-3,4,-5,6,-7,8,-9,10,-11,
19,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,
22,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,14,-15,
25,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,14,-15,16,-17,
CROSSREFS
Sequence in context: A179289 A083414 A334890 * A171173 A268671 A163618
KEYWORD
easy,sign,tabf
AUTHOR
Omar E. Pol, Feb 23 2010
STATUS
approved

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Last modified June 19 21:55 EDT 2024. Contains 373507 sequences. (Running on oeis4.)