This site is supported by donations to The OEIS Foundation.

 Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A024855 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = A023531. 0
 1, 0, 0, 1, 2, 3, 4, 1, 2, 3, 4, 5, 7, 9, 11, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 9, 11, 13, 15, 17, 19, 21, 23, 26, 29, 32, 35, 18, 20, 22, 24, 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, 29, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59, 62, 66, 70, 74, 78, 47, 50, 53, 56, 59, 62, 65, 68, 72, 76, 80 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,5 LINKS CROSSREFS Sequence in context: A053824 A033925 A064866 * A274651 A074057 A299756 Adjacent sequences:  A024852 A024853 A024854 * A024856 A024857 A024858 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 December 13 23:26 EST 2018. Contains 318087 sequences. (Running on oeis4.)