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A119726
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Triangular array read by rows: a(r,1)=a(r,r)=1; a(r,c)=4*a(r-1,c-1)+2*a(r-1,c).
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4
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1, 1, 1, 1, 6, 1, 1, 16, 26, 1, 1, 36, 116, 106, 1, 1, 76, 376, 676, 426, 1, 1, 156, 1056, 2856, 3556, 1706, 1, 1, 316, 2736, 9936, 18536, 17636, 6826, 1, 1, 636, 6736, 30816, 76816, 109416, 84196, 27306, 1, 1, 1276, 16016, 88576, 276896, 526096, 606056
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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COMMENTS
| Second column is A048487. Second diagonal is A020989.
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REFERENCES
| TERMESZET VILAGA XI.TERMESZET-TUDOMANY DIAKPALYAZAT 133.EVF. 6.SZ. jun. 2002. Vegh Lea (and Vegh Erika): "Pascal-tipusu haromszogek" http://www.kfki.hu/chemonet/TermVil/tv2002/tv0206/tartalom.html
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EXAMPLE
| 1
1 1
1 6 1
1 16 26 1
1 36 116 106 1
1 76 376 676 426 1
1 156 1056 2856 3556 1706 1
1 316 2736 9936 18536 17636 6826 1
1 636 6736 30816 76816 109416 84196 27306 1
1 1276 16016 88576 276896 526096 606056 391396 109226 1
1 2556 37136 241216 908096 2159776 3316496 3207016 1784036 436906 1
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CROSSREFS
| Cf. A007318, A048487, A020989, A119725, A119727.
Cf. A048487, A048483, A123208, A020989.
Sequence in context: A203005 A176560 A152602 * A103999 A154985 A157275
Adjacent sequences: A119723 A119724 A119725 * A119727 A119728 A119729
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KEYWORD
| easy,nonn,tabl
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AUTHOR
| Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 14 2006
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EXTENSIONS
| Edited by Don Reble (djr(AT)nk.ca), Jul 24 2006
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