Central polygonal numbers (the Lazy Caterer's sequence): n(n+1)/2 + 1; or, maximal number of pieces formed when slicing a pancake with n cuts.

A000124

Central polygonal numbers (the Lazy Caterer's sequence): n(n+1)/2 + 1; or, maximal number of pieces formed when slicing a pancake with n cuts.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =7a(4) =11a(5) =16a(6) =22a(7) =29a(8) =37a(9) =46a(10) =56a(11) =67a(12) =79a(13) =92a(14) =106a(15) =121a(16) =137a(17) =154a(18) =172a(19) =191a(20) =211a(21) =232a(22) =254a(23) =277a(24) =301a(25) =326a(26) =352a(27) =379a(28) =407a(29) =436

External references