**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.**

*1, 2, 4, 7, 11, 16, 22, 29, 37, 46, 56, 67, 79, 92, 106, 121, 137, 154, 172, 191, 211*

*5 seqfan posts*

*Fri Oct 29 05:35:16 CEST 2010* [seqfan] Implementing first 500 sequences in Java

*Sat Jan 9 00:45:39 CET 2010* [seqfan] seqs from "Computing the number of numerical semigroups using generating functions"

*Tue Dec 22 17:04:13 CET 2009* [seqfan] Re: sequence defined by ``exotic addition''

*Mon Nov 30 12:11:24 CET 2009* [seqfan] Sequences with simple recurrence definitions

*Sat Oct 10 09:55:41 CEST 2009* [seqfan] A006451 = n such that n*(n+1)/2+1 is square?

Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword

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