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Search: id:A117398
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| 0, 1, 0, 0, 2, 0, -1, 2, 3, 0, -3, 4, 5, 4, 0, -9, 14, 15, 9, 5, 0, -33, 68, 65, 34, 14, 6, 0, -153, 404, 359, 174, 63, 20, 7, 0, -873, 2804, 2375, 1098, 371, 104, 27, 8, 0, -5913, 22244, 18215, 8154, 2639, 692, 159, 35, 9, 0, -46233, 198644, 158615, 69354, 21791, 5480, 1179, 230, 44, 10, 0
(list; table; graph; listen)
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OFFSET
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0,5
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COMMENT
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Column 0 contains negative of sequence A007489.
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EXAMPLE
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Triangle begins:
0;
1,0;
0,2,0;
-1,2,3,0;
-3,4,5,4,0;
-9,14,15,9,5,0;
-33,68,65,34,14,6,0;
-153,404,359,174,63,20,7,0;
-873,2804,2375,1098,371,104,27,8,0;
-5913,22244,18215,8154,2639,692,159,35,9,0; ...
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PROGRAM
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(PARI) {T(n, k)=local(M=matrix(n+4, n+4, r, c, if(r>=c, if(r==c+1, -c, 1))), L=sum(m=1, n+4, (M^0-M)^m/m)); L[n+1, k+1]}
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CROSSREFS
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Cf. A117396, A007489 (column 0), A117399 (column 1).
Sequence in context: A099173 A108456 A089107 this_sequence A071486 A046695 A071433
Adjacent sequences: A117395 A117396 A117397 this_sequence A117399 A117400 A117401
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KEYWORD
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sign,tabl
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Mar 11 2006
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