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Search: id:A077207
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| 1, 5, 32, 126, 141, 447, 4001, 4472, 40001, 44721, 141421, 447214, 3162278, 4472136, 34641016, 109544512, 400000001, 447213596, 3464101616, 10954451150, 31622776602, 77459666925, 316227766017, 774596669241, 1414213562373
(list; graph; listen)
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OFFSET
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1,2
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PROGRAM
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(PARI) {rT(m) = ceil((sqrt(8*m+1)-1)/2)} {T(n) = (n*(n+1))/2} m=1; for(n=2, 50, k=rT((m%10)*10^(n-1)); while(T(k)%10==0, k++); m=T(k); print1(" ", k)) (Alekseyev)
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CROSSREFS
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Cf. A077206.
Sequence in context: A073694 A101966 A089574 this_sequence A001589 A006214 A015541
Adjacent sequences: A077204 A077205 A077206 this_sequence A077208 A077209 A077210
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 02 2002
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EXTENSIONS
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Corrected and extended by Max Alekseyev (maxal(AT)cs.ucsd.edu), Feb 15 2005
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