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1, 4, 2, 18, 18, 6, 6, 9, 6, 6, 150, 75, 75, 150, 30, 30, 75, 25, 75, 30, 30, 1470, 735, 1225, 1225, 735, 1470, 210, 210, 735, 245, 1225, 245, 735, 210, 210, 210, 105, 245, 245, 245, 245, 105, 210, 210, 210, 105, 35, 245, 49, 245, 35, 105, 210, 210
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| A034386(0) is interpreted as 1 here, where n=m.
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EXAMPLE
| The triangle starts in row n=1 as:
1
4, 2
18, 18, 6
6, 9, 6, 6
150, 75, 75, 150, 30
30, 75, 25, 75, 30, 30
1470, 735, 1225, 1225, 735, 1470, 210
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MATHEMATICA
| f[n_] := If[PrimeQ[n] == True, n, 1] cf[0] = 1; cf[n_Integer?Positive] := cf[n] = f[n]*cf[n - 1] bf[n_Integer?Positive, m_Integer?Positive] := bf[n, m] = cf[n]^2/(cf[m]*cf[n - m]) b = Table[Table[bf[n, m], {m, 1, n}], {n, 1, 10}] Flatten[b]
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CROSSREFS
| Cf. A034386.
Sequence in context: A189741 A074676 A152883 * A052966 A177248 A191706
Adjacent sequences: A117689 A117690 A117691 * A117693 A117694 A117695
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KEYWORD
| nonn,tabl
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AUTHOR
| Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Apr 12 2006
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EXTENSIONS
| Offset corrected by the Assoc. Eds. of the OEIS, Jun 27 2010
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