Next term is uniquely the sum of 3 earlier terms.
1, 2, 3, 6, 9, 10, 11, 12, 28, 29, 30, 53, 56, 57, 80, 82, 104, 105, 107, 129, 130, 132
3 seqfan posts
Sun Jan 2 17:07:28 CET 2011 [seqfan] Re: 4-analogue of Ulam numbers?
Sun Jan 2 16:09:51 CET 2011 [seqfan] Re: 4-analogue of Ulam numbers?
Sat Jan 1 19:02:29 CET 2011 [seqfan] 4-analogue of Ulam numbers?
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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