The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A131331 A046854 * A000012(signed). 0
 1, 0, 1, 1, 0, 1, -1, 2, 0, 1, 2, -1, 3, 0, 1, -3, 4, -1, 4, 0, 1, 5, -4, 7, -1, 5, 0, 1, -8, 9, -5, 11, -1, 6, 0, 1, 13, -12, 16, -6, 16, -1, 7, 0, 1, -21, 22, -17, 27, -7, 22, -1, 8, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 COMMENTS Row sums = A094967: (1, 1, 2, 2, 5, 5, 13, 13, 34, 34...). LINKS FORMULA A046854 * A000012(signed by columns, + - + -...). EXAMPLE First few rows of the triangle are: 1; 0, 1; 1, 0, 1; -1, 2, 0, 1; 2, -1, 3, 0, 1; -3, 4, -1, 4, 0, 1; 5, -4, 7, -1, 5, 0, 1; -8, 9, -5, 11, -1, 6, 0, 1; ... CROSSREFS Cf. A046854, A000012, A094967. Sequence in context: A025835 A029277 A077905 * A268696 A020513 A029276 Adjacent sequences:  A131328 A131329 A131330 * A131332 A131333 A131334 KEYWORD tabl,sign AUTHOR Gary W. Adamson, Jun 29 2007 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 September 27 08:39 EDT 2021. Contains 347689 sequences. (Running on oeis4.)