References to A077220

a(1) = 1; thereafter a(n) is smallest number not occurring earlier such that a(n-1)+a(n) is a triangular number.
1, 2, 4, 6, 9, 12, 3, 7, 8, 13, 15, 21, 24, 31, 5, 10, 11, 17, 19, 26, 29, 16, 20, 25, 30, 36


2 seqfan posts

Mon Jul 12 11:48:27 CEST 2010    [seqfan] Proper use of seqfan = was Re: Fw: Re: COMMENT FROM Zak Seidov
Mon Jul 12 11:41:37 CEST 2010    [seqfan] Fw: Re: COMMENT FROM submitA Zak Seidov A077220: CORRECTION!!

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