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!)
 A026050 a(n) = (d(n)-r(n))/2, where d = A026049 and r is the periodic sequence with fundamental period (1,0,0,1). 0
 59, 78, 102, 132, 170, 217, 273, 339, 417, 508, 612, 730, 864, 1015, 1183, 1369, 1575, 1802, 2050, 2320, 2614, 2933, 3277, 3647, 4045, 4472, 4928, 5414, 5932, 6483, 7067, 7685, 8339, 9030, 9758, 10524, 11330, 12177, 13065, 13995, 14969, 15988, 17052, 18162, 19320, 20527, 21783, 23089 (list; graph; refs; listen; history; text; internal format)
 OFFSET 7,1 LINKS FORMULA Conjecture: G.f. x^7*( 59-158*x+203*x^2-202*x^3+145*x^4-45*x^5 ) / ( (x^2+1)*(x-1)^4 ). - R. J. Mathar, Jun 22 2013 CROSSREFS Sequence in context: A106913 A212266 A322919 * A304356 A283146 A068209 Adjacent sequences:  A026047 A026048 A026049 * A026051 A026052 A026053 KEYWORD nonn AUTHOR 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 February 21 23:41 EST 2020. Contains 332113 sequences. (Running on oeis4.)