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Search: id:A132379
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| A132379 |
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Array read by columns down to the main diagonal where the first element in row n is n, and element k+1 in row n is the sum of element k in row n and element k-1 in row n-1. |
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+0
1
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| 1, 1, 4, 1, 5, 12, 1, 6, 17, 1, 7, 23, 49, 80, 1, 8, 30, 72, 129, 192, 1, 9, 38, 102, 201, 321, 448, 1, 10, 47, 140, 303, 522, 769, 1024, 1, 11, 57, 187, 443, 825, 1291, 1785, 2304, 1, 12, 68, 244, 630, 1268, 2116, 3076, 4089, 5120
(list; table; graph; listen)
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OFFSET
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1,3
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EXAMPLE
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The array begins:
(1) 1 1 1 1 1 1 1...
(2 3) 4 5 6 7 8 9...
(3 5 8) 12 17 23 30 38...
(4 7 12 20)32 49 72 102...
(5 9 16 28 48)80 129 201...,
each term being the sum of the number to its left and the number to its top right. Terms in parentheses are given in sequence A053218, the rest included in this sequence.
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CROSSREFS
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Cf. A053218.
Sequence in context: A090842 A120868 A100279 this_sequence A130746 A125078 A087841
Adjacent sequences: A132376 A132377 A132378 this_sequence A132380 A132381 A132382
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KEYWORD
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nonn,tabl
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AUTHOR
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Jonathan R. Love (japanada11(AT)yahoo.ca), Nov 20 2007
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