A051883 -id:A051883 - cp's OEIS frontend

A083804 a(1) = 1. If the (n-1)th partial concatenation is divisible by n then a(n) = 0. Otherwise, a(n) is the smallest positive number such that the n-th partial concatenation is divisible by n.

1, 2, 0, 0, 0, 0, 3, 2, 1, 10, 0, 8, 16, 8, 15, 20, 9, 4, 24, 20, 13, 28, 25, 28, 25, 30, 32, 20, 9, 10, 27, 2, 16, 10, 5, 36, 26, 10, 33, 20, 33, 46, 26, 28, 30, 50, 4, 48, 13, 50, 3, 12, 12, 6, 30, 64, 53, 56, 61, 60, 69, 36, 12, 8, 65, 74, 66, 4, 44, 20, 3, 76, 31, 62, 75, 6, 85, 56

Offset: 1

Amarnath Murthy, May 08 2003

			1,12,120,1200,12000,120000 1200003 etc. are multiples of 1,2,3,4,5,6 and 7 respectively.

Cf. A083805.

Cf. A051883, A073894, A099552.

Corrected and extended by David Wasserman, Nov 30 2004

A084396 a(1) = 1; then numbers in increasing order such that the n-th partial concatenation is divisible by n.

Original entry on oeis.org

1, 2, 3, 6, 10, 14, 19, 20, 24, 30, 33, 36, 44, 56, 65, 76, 89, 102, 115, 120, 131, 148, 163, 184, 200, 208, 225, 244, 248, 270, 283, 296, 303, 316, 335, 360, 393, 410, 421, 440, 460, 498, 541, 544, 550, 594, 612, 624, 661, 700, 751, 760, 771, 818, 855, 904, 923

Offset: 1

Amarnath Murthy, May 31 2003

			a(4) = 6 and 1236 is a multiple of 4.

Cf. A084397.

Cf. A051883, A073894.

More terms from David Wasserman, Dec 21 2004

cp's OEIS Frontend

A083804 a(1) = 1. If the (n-1)th partial concatenation is divisible by n then a(n) = 0. Otherwise, a(n) is the smallest positive number such that the n-th partial concatenation is divisible by n.

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