Number of -n..n arrays x(0..4) of 5 elements with zero sum, and adjacent elements not both strictly positive and not both strictly negative.

A199900

Number of -n..n arrays x(0..4) of 5 elements with zero sum, and adjacent elements not both strictly positive and not both strictly negative.

Terms

    a(0) =33a(1) =159a(2) =461a(3) =1043a(4) =2031a(5) =3573a(6) =5839a(7) =9021a(8) =13333a(9) =19011a(10) =26313a(11) =35519a(12) =46931a(13) =60873a(14) =77691a(15) =97753a(16) =121449a(17) =149191a(18) =181413a(19) =218571a(20) =261143a(21) =309629a(22) =364551a(23) =426453a(24) =495901a(25) =573483a(26) =659809a(27) =755511a(28) =861243a(29) =977681

External references