Number of horizontal steps in the peaks of all bargraphs having semiperimeter n (n>=2).
A273720
Number of horizontal steps in the peaks of all bargraphs having semiperimeter n (n>=2).
Terms
- a(0) =1a(1) =3a(2) =8a(3) =21a(4) =57a(5) =162a(6) =479a(7) =1458a(8) =4528a(9) =14259a(10) =45349a(11) =145289a(12) =468121a(13) =1515128a(14) =4922145a(15) =16040310a(16) =52411294a(17) =171646085a(18) =563266323a(19) =1851661113a(20) =6096654978a(21) =20101681834a(22) =66362538332a(23) =219336702948a(24) =725692113292
External references
- oeis: A273720