A075062 -id:A075062 - cp's OEIS frontend

A060401 a(n) = minimal m such that m>n, n divides m, n-1 divides m-1, n-2 divides m-2 and so on down to 1 divides m-n+1.

2, 4, 9, 16, 65, 66, 427, 848, 2529, 2530, 27731, 27732, 360373, 360374, 360375, 720736, 12252257, 12252258, 232792579, 232792580, 232792581, 232792582, 5354228903, 5354228904, 26771144425, 26771144426, 80313433227, 80313433228, 2329089562829, 2329089562830

Offset: 1

Christopher Burrows (cburrows(AT)math.upenn.edu), Apr 04 2001

nonn

A099427(a(n)) = n + 1. - Reinhard Zumkeller, Jul 02 2011

			a(5) = 65 because 5|65, 4|64, 3|63, 2|62, 1|61 and 65 is minimal.

Robert Israel, Table of n, a(n) for n = 1..2296

Rightmost diagonal of triangle in A075059. Cf. A075061, A075062.

Cf. A003418.

seq(n+ilcm($1..n),n=1..100); # Robert Israel, Jul 19 2016

a(n) = n + lcm(seq(i, i=1..n)).

a(n) = n + A003418(n). - Robert Israel, Jul 19 2016

A075061 Triangle in A075059 read by rows.

Original entry on oeis.org

2, 3, 4, 7, 8, 9, 13, 14, 15, 16, 61, 62, 63, 64, 65, 61, 62, 63, 64, 65, 66, 421, 422, 423, 424, 425, 426, 427, 841, 842, 843, 844, 845, 846, 847, 848, 2521, 2522, 2523, 2524, 2525, 2526, 2527, 2528, 2529, 2521, 2522, 2523, 2524, 2525, 2526, 2527, 2528, 2529

Offset: 1

Amarnath Murthy, Sep 08 2002

			2;
3 4;
7 8 9;
13 14 15 16;
61 62 63 64 65;
61 62 63 64 65 66;
...

Cf. A075059, A060401, A075062.

T(n,k+1)=T(n,k)+1. T(n,0)=A075059(n). - R. J. Mathar, Mar 01 2007

More terms from R. J. Mathar, Mar 01 2007

cp's OEIS Frontend

A060401 a(n) = minimal m such that m>n, n divides m, n-1 divides m-1, n-2 divides m-2 and so on down to 1 divides m-n+1.

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