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Search: id:A125802
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| 1, 5, 35, 485, 15200, 1144664, 215155493, 103674882878, 130648799730635, 437302448840089232, 3936208033244539574405, 96244898501021613327012635, 6446494058446469307795159512465, 1191218783863555524342034469450207222
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OFFSET
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0,2
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COMMENT
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Triangle A078122 shifts left one column under matrix cube and is related to partitions into powers of 3.
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PROGRAM
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(PARI) {a(n)=local(p=4, q=3, A=Mat(1), B); for(m=1, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i|j==1, B[i, j]=1, B[i, j]=(A^q)[i-1, j-1]); )); A=B); return(sum(c=0, n, (A^p)[n+1, c+1]))}
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CROSSREFS
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Cf. A125800, A078122; other columns: A078125, A078124, A125801, A125803.
Sequence in context: A125864 A059865 A097492 this_sequence A034217 A011556 A089043
Adjacent sequences: A125799 A125800 A125801 this_sequence A125803 A125804 A125805
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Dec 10 2006
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