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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 Table of n, a(n) for n=1..77. 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 Cf. A033627, A038608, A172310, A171164, A161165, A161166, A171172, A171173, A171175, A171176, A171177, A171178. Sequence in context: A179289 A083414 A334890 * A171173 A268671 A163618 Adjacent sequences: A171171 A171172 A171173 * A171175 A171176 A171177 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.)