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 A083957 a(n) = product of all cyclic permutation of concatenation of first n numbers. In each case the digits of a number are kept together for n>9. 1
 1, 252, 8864856, 40638618022744, 23098236228791472696480, 1568841035670687222903484318855680, 12397389650957442295025809189993580551236444160 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Initial terms are {n(n+1)/2}*{A000042(n)}. LINKS Table of n, a(n) for n=1..7. EXAMPLE a(1) = 1, a(2) = 12*21 = 252, a(3) = 123*231*312 = 8864856. CROSSREFS Cf. A000042, A083956. Sequence in context: A068275 A068287 A229777 * A172656 A172760 A172831 Adjacent sequences: A083954 A083955 A083956 * A083958 A083959 A083960 KEYWORD base,nonn AUTHOR Amarnath Murthy, May 10 2003 EXTENSIONS More terms from David Wasserman, Dec 03 2004 STATUS approved

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Last modified September 16 02:52 EDT 2024. Contains 375959 sequences. (Running on oeis4.)