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Search: id:A104747
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OFFSET
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1,2
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COMMENT
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Conjecture: a(n)/a(n-1) tends to (1 + sqrt(2)). (a(8)/a(7) = 1327/550 = 2.412727...).
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FORMULA
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a(n) = sum of terms in n-th row of triangle A104746.
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EXAMPLE
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First few rows of A104746 are:
1;
1, 3;
1, 4, 7;
1, 5, 12, 15;
1, 6, 17, 32, 31;
1, 7, 22, 49, 80, 63;
...
Row sums are 1, 4, 12, 33, 87, 222...
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CROSSREFS
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Cf. A104746, A001787, A000337, A027992, A059823.
Adjacent sequences: A104744 A104745 A104746 this_sequence A104748 A104749 A104750
Sequence in context: A120369 A001665 A066536 this_sequence A070050 A027941 A135254
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KEYWORD
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nonn,tabl,uned
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Mar 23 2005
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