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1, 0, 1, 2, 0, 1, 0, 4, 0, 1, 5, 0, 6, 0, 1, 0, 14, 0, 8, 0, 1, 13, 0, 27, 0, 10, 0, 1, 0, 46, 0, 44, 0, 12, 0, 1, 34, 0, 107, 0, 65, 0, 14, 0, 1, 0, 145, 0, 204, 0, 90, 0, 16, 0, 1
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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COMMENTS
| Left border, nonzero terms = odd indexed Fibonacci numbers: (1, 2, 5, 13,...). Next column, nonzero terms = A030267: (1, 4, 14, 46, 145,...). Row sums = A131322: (1, 1, 3, 5, 12, 23, 51,...).
Riordan array (f(x),x*f(x)) where f(x)=(1-x^2)/(1-3*x^2+x^4). Aerated version of triangle in A188137. - DELEHAM Philippe, Jan 26 2012
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FORMULA
| A049310 squared, as an infinite lower triangular matrix.
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EXAMPLE
| First few rows of the triangle are:
1;
0, 1;
2, 0, 1;
0, 4, 0, 1;
5, 0, 6, 0, 1;
0, 14, 0, 8, 0, 1;
13, 0, 27, 0, 10, 0, 1;
...
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CROSSREFS
| Cf. A049310, A030267, A188137.
Sequence in context: A053389 A202328 A136688 * A111959 A110109 A145973
Adjacent sequences: A131318 A131319 A131320 * A131322 A131323 A131324
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KEYWORD
| nonn,tabl
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AUTHOR
| Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 28 2007
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